Performance information

• Dry Reforming of Methane on Low‐Loading Rh Catalysts　　　　　　　　　　　　　　　
  Ryuhei Tsuchida; Hideki Kurokawa; Tomokazu Yamamoto; Hitoshi Ogihara
  ChemCatChem, Volume：17, Number：3, Nov. 2024, [Reviewed], [Corresponding]
  Abstract
  
  Dry reforming of methane (DRM) is a promising catalytic process for converting greenhouse gases (CH₄ and CO₂) into syngas (CO and H₂). This study investigates DRM under moderate conditions (550 °C) using supported low‐loading (0.05 wt%) metal (M) catalysts (M = Rh, Ru, Pt, Pd, Ir, Au, and Ni). The reaction was carried out for 6 h with a flow rate of 30 mL/min for both CH₄ and CO₂, using 0.10 g of catalyst. Among these catalysts, 0.05 wt% Rh/Al₂O₃ exhibited the highest DRM activity. The effect of catalyst supports revealed that Al₂O₃ is the most effective support for 0.05 wt% Rh. The DRM activity of Rh species supported on Al₂O₃ and SiO₂ was compared, and the Rh species on Al₂O₃ outperformed those on SiO₂, indicating Al₂O₃ enhances the DRM activity of Rh. When comparing the DRM activity of Rh nanoparticles and Rh single atoms, it was suggested that Rh nanoparticles might exhibit superior performance for DRM. Coke deposited on 0.05 wt% Rh/Al₂O₃ is removed by CO₂, maintaining stable catalytic activity. These findings provide valuable insights into the design of catalysts that minimize the use of noble metals in DRM reactions.
  Wiley, Scientific journal
  DOI：https://doi.org/10.1002/cctc.202401386
  DOI ID：10.1002/cctc.202401386, ISSN：1867-3880, eISSN：1867-3899
• Synthesis of 1,1-diethoxyethane from ethanol using electrogenerated acid
  Taichi Kasahara; Daisuke Kawaguchi; Hideki Kurokawa; Hitoshi Ogihara
  Chemistry Letters, Volume：53, Number：11, Oct. 2024, [Reviewed], [Corresponding]
  Abstract
  
  We introduce a novel reaction where electrogenerated acid enhances ethanol upgrading. Electrochemical oxidation of ethanol produces acetaldehyde and protons; the protons act as electrogenerated acid, catalyzing acetalization to form 1,1-diethoxyethane. Stirring the solution shifts the reaction toward acetaldehyde production because electrogenerated acid is neutralized by an electrogenerated base at the cathode.
  Oxford University Press (OUP), Scientific journal
  DOI：https://doi.org/10.1093/chemle/upae194
  DOI ID：10.1093/chemle/upae194, ISSN：0366-7022, eISSN：1348-0715
• Methane dehydroaromatization (MDA) on VO /HZSM-5 catalysts　　　　　　　　　　　　　　　
  Hyunwoo Jung; Taisei Watashima; Hideki Kurokawa; Hitoshi Ogihara
  Applied Catalysis A: General, Volume：676, First page：119662, Last page：119662, Apr. 2024, [Reviewed], [Corresponding]
  Elsevier BV, Scientific journal
  DOI：https://doi.org/10.1016/j.apcata.2024.119662
  DOI ID：10.1016/j.apcata.2024.119662, ISSN：0926-860X
• The Effect of Structural Change during the Activation Process on the Catalysis of In/SiO₂ Nonoxidative Coupling of Methane: An Operando XAFS Study
  Takahiro Wada; Upendar Kashaboina; Yuta Nishikawa; Yuki Wakisaka; Deling Bao; Satoru Takakusagi; Yuta Inami; Fumiya Kuriyama; Arnoldus Lambertus Dipu; Hitoshi Ogihara; Shoji Iguchi; Ichiro Yamanaka; Daiki Kido; Masao Kimura; Motohiro Uo; Kiyotaka Asakura
  The Journal of Physical Chemistry C, Dec. 2023, [Reviewed], [Lead]
  American Chemical Society (ACS), English, Scientific journal
  DOI：https://doi.org/10.1021/acs.jpcc.3c04539
  DOI ID：10.1021/acs.jpcc.3c04539, ISSN：1932-7447, eISSN：1932-7455
• Dehydrogenative Conversion of Methane to C2 Hydrocarbons and Aromatics over Pt/Al2O3 Catalysts
  Riku TAKAMURA; Tatsuki TOMONO; Miru YOSHIDA-HIRAHARA; Hitoshi OGIHARA; Hideki KUROKAWA
  Journal of the Japan Petroleum Institute, Volume：66, Number：5, First page：162, Last page：170, Sep. 2023, [Reviewed], [Corresponding]
  Japan Petroleum Institute, Scientific journal
  DOI：https://doi.org/10.1627/jpi.66.162
  DOI ID：10.1627/jpi.66.162, ISSN：1346-8804, eISSN：1349-273X
• Effect of Nafion Ionomer on Proton Exchange Membrane Electrolysis of Benzyl Alcohol
  Shady Abdelnasser; Hibiki Matsushita; Hideki Kurokawa; Hitoshi Ogihara
  Chemistry Letters, Volume：52, Number：7, First page：560, Last page：563, Jul. 2023, [Reviewed], [Corresponding]
  The Chemical Society of Japan, Scientific journal
  DOI：https://doi.org/10.1246/cl.230178
  DOI ID：10.1246/cl.230178, ISSN：0366-7022, eISSN：1348-0715
• General Synthesis of MTiO₃ (M = Ba, Sr, Ca, Zn, and Mg) Using Water-soluble Ti complexes
  Seito Kawai; Mai Higuchi; Miru Yoshida-Hirahara; Hitoshi Ogihara; Hideki Kurokawa
  Chemistry Letters, Volume：52, Number：6, First page：492, Last page：495, Jun. 2023, [Reviewed], [Corresponding]
  The Chemical Society of Japan, Scientific journal
  DOI：https://doi.org/10.1246/cl.230132
  DOI ID：10.1246/cl.230132, ISSN：0366-7022, eISSN：1348-0715
• 1,3-Butadiene Production by Simple Dehydrogenation of 1-Butene in the Presence of Steam Over Pt Supported on SnO2-Coated Al2O3
  Takaki Ishizaki; Mitsuki Usui; Seiji Kuchiki; Miru Hirahara; Hitoshi Ogihara; Hideki Kurokawa; Hiroshi Miura
  Catalysis Letters, Feb. 2023, [Reviewed]
  Springer Science and Business Media LLC, Scientific journal
  DOI：https://doi.org/10.1007/s10562-023-04281-7
  DOI ID：10.1007/s10562-023-04281-7, ISSN：1011-372X, eISSN：1572-879X
• Dehydrogenative coupling of methane over Pt/Al₂O₃ catalysts: effect of hydrogen co-feeding
  Tatsuki Tomono; Riku Takamura; Miru Yoshida-Hirahara; Tomokazu Yamamoto; Syo Matsumura; Hideki Kurokawa; Hitoshi Ogihara
  Catalysis Science & Technology, Volume：13, Number：16, First page：4656, Last page：4664, 2023, [Corresponding]
  Pt/AI₂O₃ converts CH₄ into C₂ hydrocarbons by H₂ co-feeding.
  Royal Society of Chemistry (RSC), Scientific journal
  DOI：https://doi.org/10.1039/d3cy00612c
  DOI ID：10.1039/d3cy00612c, ISSN：2044-4753, eISSN：2044-4761
• Proton exchange membrane electrolysis of methanol for simultaneously synthesizing formaldehyde and hydrogen
  Nanako Kuramochi; Miru Yoshida-Hirahara; Hitoshi Ogihara; Hideki Kurokawa
  Sustainable Energy & Fuels, Volume：7, Number：3, First page：778, Last page：785, 2023, [Corresponding]
  Electrolysis for upgrading molecules has received attention as a green process that can contribute to a sustainable society. In this study, methanol was converted into formaldehyde and H₂via electrolysis using a membrane electrode assembly device.
  Royal Society of Chemistry (RSC), Scientific journal
  DOI：https://doi.org/10.1039/d2se01472f
  DOI ID：10.1039/d2se01472f, eISSN：2398-4902
• Electrochemical oxidation of 1-propanol through proton exchange membrane electrolysis　　　　　　　　　　　　　　　
  Shady Abdelnasser; Takumi Hakamata; Hitoshi Ogihara; Hideki Kurokawa
  Journal of Electroanalytical Chemistry, Volume：928, First page：117009, Last page：117009, Jan. 2023, [Corresponding]
  Elsevier BV, Scientific journal
  DOI：https://doi.org/10.1016/j.jelechem.2022.117009
  DOI ID：10.1016/j.jelechem.2022.117009, ISSN：1572-6657
• One-Step Synthesis of Highly Active NiFe Electrocatalysts for the Oxygen Evolution Reaction
  Aoi Sakamaki; Miru Yoshida-Hirahara; Hitoshi Ogihara; Hideki Kurokawa
  Langmuir, Volume：38, Number：18, First page：5525, Last page：5531, May 2022, [Corresponding]
  American Chemical Society (ACS), Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.2c00097
  DOI ID：10.1021/acs.langmuir.2c00097, ISSN：0743-7463, eISSN：1520-5827
• CoN₄C_x Electrocatalyst for CO₂ Reduction to CO by the Solid Polymer Electrolyte Electrolysis
  Shoji Iguchi; Siyuan Jia; Yuji Ogishima; Yuki Senba; Hitoshi Ogihara; Ichiro Yamanaka
  Energy & Fuels, Volume：36, Number：4, First page：2300, Last page：2304, Feb. 2022
  American Chemical Society (ACS), Scientific journal
  DOI：https://doi.org/10.1021/acs.energyfuels.1c04277
  DOI ID：10.1021/acs.energyfuels.1c04277, ISSN：0887-0624, eISSN：1520-5029
• Simple solution route to synthesize NiFe oxide/nanocarbon composite catalysts for the oxygen evolution reaction
  Mizuri Yaguchi; Miru Yoshida-Hirahara; Hitoshi Ogihara; Hideki Kurokawa
  New Journal of Chemistry, Volume：46, Number：19, First page：9312, Last page：9321, 2022, [Corresponding]
  The simple solution route produces OER-active and cost-effective NiFeO_x/C catalysts, which contribute to the production of green hydrogen via electrochemical water splitting.
  Royal Society of Chemistry (RSC), Scientific journal
  DOI：https://doi.org/10.1039/d2nj00947a
  DOI ID：10.1039/d2nj00947a, ISSN：1144-0546, eISSN：1369-9261
• Facile synthesis of nanostructured perovskites by precursor accumulation on nanocarbons
  Mai Higuchi; Mizuri Yaguchi; Miru Yoshida-Hirahara; Hitoshi Ogihara; Hideki Kurokawa
  RSC Advances, Volume：12, Number：10, First page：6186, Last page：6191, 2022, [Corresponding]
  Various nano-perovskites are synthesized by dropping a precursor solution of metal salts into nanocarbon, followed by drying and calcination in air. The accumulation of precursors on the surface of nanocarbon is the key step.
  Royal Society of Chemistry (RSC), Scientific journal
  DOI：https://doi.org/10.1039/d1ra08357k
  DOI ID：10.1039/d1ra08357k, eISSN：2046-2069
• Upgrading of Ethanol to 1,1‐Diethoxyethane by Proton‐Exchange Membrane Electrolysis
  Daisuke Kawaguchi; Hitoshi Ogihara; Hideki Kurokawa
  ChemSusChem, Volume：14, Number：20, First page：4431, Last page：4438, Oct. 2021, [Corresponding]
  Wiley, Scientific journal
  DOI：https://doi.org/10.1002/cssc.202101188
  DOI ID：10.1002/cssc.202101188, ISSN：1864-5631, eISSN：1864-564X
• X-ray absorption fine structure studies on nickel phosphide catalysts for the non-oxidative coupling of methane reaction using a theoretical model　　　　　　　　　　　　　　　
  Md Harun Al Rashid; Arnoldus Lambertus Dipu; Yuta Nishikawa; Hitoshi Ogihara; Yuta Inami; Shoji Iguchi; Ichiro Yamanaka; Shinchi Nagamatsu; Daiki Kido; Bing Hu; Kiyotaka Asakura
  Radiation Physics and Chemistry, Volume：189, First page：109727, Last page：109727, Jul. 2021
  Elsevier BV, Scientific journal
  DOI：https://doi.org/10.1016/j.radphyschem.2021.109727
  DOI ID：10.1016/j.radphyschem.2021.109727, ISSN：0969-806X
• Erratum: Active phase structure of the SiO2-supported Nickel Phosphide Catalysts for Non-oxidative Coupling of Methane (NOCM) (e-Journal of Surface Science and Nanotechnology (2020) 18 (24-27) DOI: 10.1380/ejssnt.2020.24)　　　　　　　　　　　　　　　
  M. H. Al Rashid; A. Dipu; Y. Nishikawa; H. Ogihara; Y. Inami; S. Obuchi; I. Yamanaka; S. Nagamatsu; D. Kido; K. Asakura
  e-Journal of Surface Science and Nanotechnology, Volume：19, First page：69, 2021
  The Debye-Waller factor's unit and notation [σ2 (10−4 Å2)] in Table 1 on p. 26 in the original article were incorrect. The correct Debye-Waller factor in Table 1 is shown below. This correction does not affect the results and the conclusion of the original article. (Table Presented).
  The Japan Society of Vacuum and Surface Science, English, Scientific journal
  DOI：https://doi.org/10.1380/EJSSNT.2021.69
  DOI ID：10.1380/EJSSNT.2021.69, ISSN：1348-0391, SCOPUS ID：85111555452
• Precursor accumulation on nanocarbons for the synthesis of LaCoO3 nanoparticles as electrocatalysts for oxygen evolution reaction
  Aoi Sakamaki; Hitoshi Ogihara; Miru Yoshida-Hirahara; Hideki Kurokawa
  RSC Advances, Volume：11, Number：33, First page：20313, Last page：20321, 2021, [Corresponding]
  

  A simple synthetic process for LaCoO₃ nanoparticles based on the accumulation of precursors on nanocarbon supports was presented. The LaCoO₃ nanoparticles showed excellent OER activity owing to their high surface area and perovskite structure.

  
  Royal Society of Chemistry (RSC), Scientific journal
  DOI：https://doi.org/10.1039/d1ra03762e
  DOI ID：10.1039/d1ra03762e, eISSN：2046-2069
• Catalytic Mechanism of Liquid-Metal Indium for Direct Dehydrogenative Conversion of Methane to Higher Hydrocarbons
  Yuta Nishikawa; Yuhki Ohtsuka; Hitoshi Ogihara; Rattanawalee Rattanawan; Min Gao; Akira Nakayama; Jun-ya Hasegawa; Ichiro Yamanaka
  ACS Omega, Volume：5, Number：43, First page：28158, Last page：28167, Nov. 2020
  American Chemical Society (ACS), Scientific journal
  DOI：https://doi.org/10.1021/acsomega.0c03827
  DOI ID：10.1021/acsomega.0c03827, ISSN：2470-1343, eISSN：2470-1343
• The Active Center of Co–N–C Electrocatalysts for the Selective Reduction of CO2 to CO Using a Nafion-H Electrolyte in the Gas Phase
  Hitoshi Ogihara; Tomomi Maezuru; Yuji Ogishima; Yuta Inami; Mayuko Saito; Shoji Iguchi; Ichiro Yamanaka
  ACS Omega, Volume：5, Number：31, First page：19453, Last page：19463, Aug. 2020, [Reviewed], [Lead]
  American Chemical Society (ACS), Scientific journal
  DOI：https://doi.org/10.1021/acsomega.0c01510
  DOI ID：10.1021/acsomega.0c01510, ISSN：2470-1343, eISSN：2470-1343
• Green Synthesis of Methyl Formate via Electrolysis of Pure Methanol
  Ryoji Kishi; Hitoshi Ogihara; Miru Yoshida-Hirahara; Kazuya Shibanuma; Ichiro Yamanaka; Hideki Kurokawa
  ACS Sustainable Chemistry & Engineering, Volume：8, Number：31, First page：11532, Last page：11540, Aug. 2020, [Reviewed], [Corresponding]
  American Chemical Society (ACS), Scientific journal
  DOI：https://doi.org/10.1021/acssuschemeng.0c02281
  DOI ID：10.1021/acssuschemeng.0c02281, ISSN：2168-0485, eISSN：2168-0485
• Coating of Silica Nanolayers on Carbon Nanofibers via the Precursor Accumulation Method　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Norihiro Usui; Miru Yoshida-Hirahara; Hideki Kurokawa
  Langmuir, Mar. 2020, [Reviewed], [Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1021/acs.langmuir.0c00083
  DOI ID：10.1021/acs.langmuir.0c00083
• Direct Dehydrogenative Conversion of Methane to Hydrogen, Nanocarbons, Ethane, and Ethylene on Pd/SiO2 Catalysts　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Natsuko Imai; Miru Yoshida-Hirahara; Hideki Kurokawa
  Chemistry Letters, Mar. 2020, [Reviewed], [Corresponding]
  English, Scientific journal
  DOI：https://doi.org/10.1246/cl.190863
  DOI ID：10.1246/cl.190863
• Decomposition and Coupling of Methane over Pd-Au/Al2O3 Catalysts to Form COx-free Hydrogen and C2 Hydrocarbons　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Natsuko Imai; Hideki Kurokawa
  International Journal of Hydrogen Energy, 2020, [Reviewed], [Lead, Corresponding]
• Methane conversion on cobalt-added liquid-metal indium catalysts
  Hiroki Tajima; Hitoshi Ogihara; Miru Yoshida-Hirahara; Hideki Kurokawa
  New Journal of Chemistry, 2020, [Reviewed], [Corresponding]
  

  In–Co converts CH₄ molecules by catalyzing CH₄ coupling over indium liquid metal and aromatization over Co in liquid metal.

  
  Royal Society of Chemistry (RSC), Scientific journal
  DOI：https://doi.org/10.1039/d0nj03808c
  DOI ID：10.1039/d0nj03808c, ISSN：1144-0546, eISSN：1369-9261
• Pyrolysis of Mixtures of Methane and Ethane: Activation of Methane with the Aid of Radicals Generated from Ethane　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Hiroki Tajima; Hideki Kurokawa
  Reaction Chemistry & Engineering, Volume：5, First page：143, Last page：153, 2020, [Reviewed], [Corresponding]
  Scientific journal
  DOI：https://doi.org/10.1039/C9RE00400A
  DOI ID：10.1039/C9RE00400A
• Active Phase Structure of the SiO2-Supported Nickel Phosphide catalysts for Non-Oxidative Coupling of Methane Reactions
  M. H. Al Rashid; A. Dipu; Y. Nishikawa; H. Ogihara; Y. Inami; S. Obuchi; I. Yamanaka; S. Nagamatsu; D. Kido; K. Asakura
  e-Journal of Surface Science and Nanotechnology, Volume：18, First page：24, Last page：27, 2020, [Reviewed]
  Surface Science Society Japan, Scientific journal
  DOI：https://doi.org/10.1380/ejssnt.2020.24
  DOI ID：10.1380/ejssnt.2020.24, eISSN：1348-0391
• Direct Nonoxidative Conversion of Methane to Higher Hydrocarbons over Silica-​Supported Nickel Phosphide Catalyst　　　　　　　　　　　　　　　
  Arnoldus Lambertus Dipu; Shunya Ohbuchi; Yuta Nishikawa; Shoji Iguchi; Hitoshi Ogihara; Ichiro Yamanaka
  ACS Catalysis, Volume：10, Number：1, First page：375, Last page：379, Dec. 2019, [Reviewed]
  English, Scientific journal
  DOI：https://doi.org/10.1021/acscatal.9b03955
  DOI ID：10.1021/acscatal.9b03955
• Catalysis of liquid-metal indium for direct dehydrogenative conversion of methane into higher hydrocarbons　　　　　　　　　　　　　　　
  Yuta Nishikawa; Ayumi Nakaya; Hitoshi Ogihara; Yuki Ohtsuka; Akira Nakayama; Jun-ya Hasegawa; Shoji Iguchi; Ichiro Yamanaka
  12th Natural Gas Conversion Symposium 2019, First page：263, Last page：266, 2019
  Dehydrogenative conversion of methane (DCM) is an attractive reaction. We already reported that liquid-metal indium supported on silica (In/Si02) was an effective catalyst for DCM. Characterization studies and kinetic studies indicated that liquid-metal indium catalyzed cleavage of a C-H bond of methane and coupling methane to ethane selectively. In addition, conversion of ethane and temperature-programmed reaction in ethane (TPR-C2H6) suggested that indium did not activate both a C-H bond and a C-C bond of ethane. Indium has the unique catalysis to activate only a C-H bond of methane, therefore, selectivity to hydrocarbons was still high despite high temperature.
  AIChE, English, International conference proceedings
  SCOPUS ID：85075721236
• Synergy of Ru and Ir in the Electrohydrogenation of Toluene to Methylcyclohexane on a Ketjenblack-Supported Ru-Ir Alloy Cathode　　　　　　　　　　　　　　　
  Yuta Inami; Hitoshi Ogihara; Shinichi Nagamatsu; Kiyotaka Asakura; Ichiro Yamanaka
  ACS Catalysis, Volume：9, First page：2448, Last page：2457, 2019, [Reviewed]
  Scientific journal
  DOI：https://doi.org/10.1021/acscatal.8b03610
  DOI ID：10.1021/acscatal.8b03610
• Electrocatalytic Reduction of CO2 to CO and CH4 by Co-N-C Catalyst and Ni co-catalyst with PEM Reactor　　　　　　　　　　　　　　　
  Sato, Masato; Ogihara, Hitoshi; Yamanaka, Ichiro
  ISIJ International, Volume：59, Number：4, First page：623, Last page：627, 2019, [Reviewed]
  Scientific journal
  DOI：https://doi.org/10.2355/isijinternational.ISIJINT-2018-551
  DOI ID：10.2355/isijinternational.ISIJINT-2018-551
• α-Iminocarboxamide-Ni Complex Immobilized on Acid-Treated Montmorillonite as Catalyst for Ethylene Polymerization　　　　　　　　　　　　　　　
  Murayama, Isshin; Yamamoto, Kazuhiro; Sakuragi, Tsutomu; Iiba, Kenji; Hirahara, Miru; Ogihara, Hitoshi; Kurokawa, Hideki
  Macromolecular Reaction Engineering, Volume：13, First page：1900013, 2019, [Reviewed]
  Scientific journal
  DOI：https://doi.org/10.1002/mren.201900013
  DOI ID：10.1002/mren.201900013
• Theoretical Study on the C-H Activation of Methane by Liquid-Metal Indium: Catalytic Activity of Small Indium Clusters　　　　　　　　　　　　　　　
  Yuhki Ohtsuka; Yuta Nishikawa; Hitoshi Ogihara; Ichiro Yamanaka; Manussada Ratanasak; Akira Nakayama; Jun-ya Hasegawa
  The Journal of Physical Chemistry A, Volume：123, Number：41, First page：8907, Last page：8912, 2019, [Reviewed]
  The mechanism of C-H activation of methane by liquid indium, which is the first step of the dehydrogenative conversion of methane to higher hydrocarbons, was investigated using density functional theory calculations. In the first-principle molecular dynamics trajectory at the experimental temperature (1200 K), low-coordinated indium atoms continuously appear on the disordered liquid surface. The C-H cleavage is endothermic on clean surfaces, while the low-coordinated indium atoms reduce the endothermicity significantly. In small indium clusters, which are models of low-coordinated atoms on a surface, the calculated activation energy is much smaller than that on the clean surface. The energy level of the methane C-H sigma* orbital is reduced by the interaction with the indium 5p sigma orbitals. In-2 shows the lowest activation energy and exothermicity in the C-H bond cleavage.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/acs.jpca.9b06374
  DOI ID：10.1021/acs.jpca.9b06374, ISSN：1089-5639, eISSN：1520-5215, Web of Science ID：WOS:000492118200014
• Metamorphosis-like Transformation during Activation of In/SiO2 Catalyst for Non-oxidative Coupling of Methane: In Situ X-ray Absorption Fine Structure Analysis　　　　　　　　　　　　　　　
  Deling Bao; Hiroko Ariga-Miwa; Satoru Takakusagi; Yuta Inami; Fumiya Kuriyama; Arnoldus Lambertus Dipu; Hitoshi Ogihara; Shoji Iguchi; Ichiro Yamanaka; Takahiro Wada; Kiyotaka Asakura
  Chemistry Letters, Volume：48, Number：9, First page：1145, Last page：1147, 2019, [Reviewed]
  The local structure of In/SiO2, which is a potential catalyst for the non-oxidative coupling of methane, was investigated by using in situ In K-edge X-ray absorption fine-structure analysis. During the activation process, the In/SiO2 catalyst underwent several metamorphosis-like transformations of its structure before final conversion to the active phase.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.190440
  DOI ID：10.1246/cl.190440, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000484495200014
• Erratum to: Effects of Carbon Supports on Ru Electrocatalysis for the Electrohydrogenation of Toluene to Methylcyclohexane (Electrocatalysis, (2018), 9, 2, (204-211), 10.1007/s12678-017-0409-3)　　　　　　　　　　　　　　　
  Yuta Inami; Hitoshi Ogihara; Ichiro Yamanaka
  Electrocatalysis, Volume：9, Number：2, First page：212, Mar. 2018, [Reviewed]
  In the original publication of the article, Equations (1) to (7) have unconverted characters and spacing error. The original article has been corrected.
  Springer New York LLC, English, Scientific journal
  DOI：https://doi.org/10.1007/s12678-017-0422-6
  DOI ID：10.1007/s12678-017-0422-6, ISSN：1868-5994, SCOPUS ID：85043472432
• Electrocatalytic Activity of Co-4,4′dimethyl-2,2′-bipyridine Supported on Ketjenblack for Reduction of CO2 to CO Using PEM Reactor　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Tomomi Maezuru; Yuji Ogishima; Ichiro Yamanaka
  Electrocatalysis, Volume：9, Number：2, First page：220, Last page：225, Mar. 2018, [Reviewed]
  Electrochemical reduction of CO2 was carried out to synthesize CO by using a gas-electrolysis cell. Heat treatment of Co(dmbpy)3 (dmbpy: 4,4′-dimethyl-2,2′-bipyridine) complex on Ketjenblack (KB) in a He stream at 673 K provided an effective electrocatalyst, as denoted Co-dmbpy/KB, for selective reduction of CO2 to CO. Both Co loadings and dmbpy/Co ratios in the Co-dmbpy/KB precusors played important roles in determining their electrocatalytic activities. Under potentiostatic electrolysis at −0.70 V (standard hydrogen electrode (SHE)), Co-dmbpy/KB (Co loading 1 wt%, dmbpy/Co = 5) showed an excellent CO2 reduction activity, a formation rate of CO 254 μmol h−1 cm−2 and a faradic efficiency of CO 78.0%. By localizing the electrocatalyst at the interface between cathode and Nafion, the electrocatalyst was efficiently utilized and a high turn-over number 1183 h−1 was achieved. Temperature-programmed desorption mass spectrometry for CO2 (CO2 TPD-MS) indicated that CO2 adsorption capacity of the electrocatalyst was irreverent to their electroreduction activity for CO2. [Figure not available: see fulltext.].
  Springer New York LLC, English, Scientific journal
  DOI：https://doi.org/10.1007/s12678-017-0419-1
  DOI ID：10.1007/s12678-017-0419-1, ISSN：1868-5994, SCOPUS ID：85043484528
• Direct Synthesis of Pure H2O2 Aqueous Solution by CoTPP/Ketjen-Black Electrocatalyst and the Fuel Cell Reactor　　　　　　　　　　　　　　　
  Tatsuya Iwasaki; Yukako Masuda; Hitoshoi Ogihara; Ichiro Yamanaka
  Electrocatalysis, Volume：9, Number：2, First page：236, Last page：242, Mar. 2018, [Reviewed]
  Hydrogen peroxide as an important and green oxidant for chemical process is manufactured by the anthraquinone (AQ) process, which is an indirect synthesis method and consumes a large quantity of energy. We have reported the direct and efficient synthesis of pure H2O2 aqueous solutions by O2 and H2 fuel-cell reactions using the Co-N-C compound cathode. Catalysis of Co-N-C-compound was improved in this work. Precursors of Co-N-C compounds were prepared by impregnation of 5,10,15,20-tetrakis(phenyl)-21H, 23H-porphyrin cobalt (II) (CoTPP) on various carbon materials. Effects of carbon materials, heat-treatment temperatures, Co loadings of the precursors on the electrocatalysis for H2O2 synthesis were studied from a current density (j), a H2O2 formation rate (R(H2O2)), a H2O2 concentration (C(H2O2)) and a faradic efficiency for H2O2 formation (FE(H2O2)). The most active and effective Co-N-C electrocatalyst is Ketjen-Black supported CoTPP (0.05 Co-wt%) activated at 1023 K in He stream as denoted 0.05 wt%/CoTPP/KB(1023 K) and shows a highest C(H2O2) and FE(H2O2) of 5.5 mol dm−3 (18.7 wt%) and 55%, respectively, with a high Co turnover-frequency of 26 s−1. Effects of amounts of the 0.05 wt%/CoTPP/KB(1023 K) electrocatalyst coated on the VGCF-base cathode were studied on the H2O2 synthesis and distributions of open-circuit voltages as electromotive forces to cathode and anode over-potentials and an IR-drop (VGCF: vapor-growing carbon fiber). [Figure not available: see fulltext.].
  Springer New York LLC, English, Scientific journal
  DOI：https://doi.org/10.1007/s12678-017-0444-0
  DOI ID：10.1007/s12678-017-0444-0, ISSN：1868-5994, SCOPUS ID：85043478685
• Effects of Carbon Supports on Ru Electrocatalysis for the Electrohydrogenation of Toluene to Methylcyclohexane　　　　　　　　　　　　　　　
  Yuta Inami; Hitoshi Ogihara; Ichiro Yamanaka
  Electrocatalysis, Volume：9, Number：2, First page：204, Last page：211, Mar. 2018, [Reviewed]
  Electrochemical hydrogenation of toluene (TL) to methylcyclohexane (MCH) using a polymer electrolyte membrane electrolysis cell (PEEC) has been paid attention for application to hydrogen storage system. Although a 50 wt% Pt/Ketjenblack (KB) electrocatalyst was active for the electrohydrogenation of TL, we have found that KB supported only 1 wt% Ru electrocatalyst (Ru/KB) which was active for the electrohydrogenation. In this work, effects of carbon support on Ru electrocatalysis for the electrohydrogenation were investigated. Electrohydrogenation activities of Ru using various carbon materials, carbon blacks, graphenes, and carbon fiber were evaluated, and strong carbon-support effects were observed. Carbon black-supported Ru cathodes showed superior electrohydrogenation activities to compare with that of graphene or carbon fiber-supported Ru cathodes. A Black Pearls® 3500 supported Ru (Ru/BP3500) cathode showed an especially high electrohydrogenation activity even at a higher current density of 400 mA cm−2 in galvanostatic electrolysis. The Ru/carbon materials were characterized by N2 adsorption, X-ray diffraction (XRD), high-angle annular dark-field scanning transmitting electron microscope (HAADF-STEM), CO-pulse adsorption, and X-ray photoelectron spectroscopy (XPS). These characterization data indicated that Ru particle sizes and Ru surface areas of cathodes were very similar though their electrocatalytic activities were different. Effects of the carbon supports on the electrohydrogenation were discussed on a basis of the reaction mechanism reported previously. [Figure not available: see fulltext.].
  Springer New York LLC, English, Scientific journal
  DOI：https://doi.org/10.1007/s12678-017-0409-3
  DOI ID：10.1007/s12678-017-0409-3, ISSN：1868-5994, SCOPUS ID：85043453965
• Polyethylene blend prepared by ethylene or ethylene/1-hexene polymerization using Ni(II) and Fe(III) complexes immobilized into fluorotetrasilicic mica interlayer as catalyst
  Sosuke Kudo; Miru Hirahara; Hitoshi Ogihara; Hideki Kurokawa
  Kobunshi Ronbunshu, Volume：75, Number：6, First page：557, Last page：563, 2018, [Reviewed]
  DOI：https://doi.org/10.1295/koron.2018-0026
  DOI ID：10.1295/koron.2018-0026, ORCID：63070639, SCOPUS ID：85057118190
• Dehydrogenation of n-Butane to Butenes and 1,3-Butadiene over PtAg/Al2O3 Catalysts in the Presence of H2　　　　　　　　　　　　　　　
  Hideki Kurokawa; Hayato Namoto; Atsuko Horinouchi; Mitsuhiko Sato; Mitsuki Usui; Hitoshi Ogihara; Hiroshi Miura
  Journal of Materials Science and Chemical Engineering, Volume：6, First page：16, Last page：24, 2018, [Reviewed]
  Scientific journal
  DOI：https://doi.org/10.4236/msce.2018.67003
  DOI ID：10.4236/msce.2018.67003
• Liquid-Metal Indium Catalysis for Direct Dehydrogenative Conversion of Methane to Higher Hydrocarbons　　　　　　　　　　　　　　　
  Nishikawa Yuta; Ogihara Hitoshi; Yamanaka Ichiro
  CHEMISTRYSELECT, Volume：2, Number：16, First page：4572, Last page：4576, May 2017, [Reviewed]
  Catalysts for dehydrogenative conversion of methane (DCM) to higher hydrocarbons are worthy of attention. Indium supported on silica (In/SiO2) was found for effective catalyst for the DCM reaction above 1023 K. Products were ethane, ethylene, acetylene, propylene, benzene, toluene, naphthalene and hydrogen. A highest selectivity of sum of products was 96% at 1098 K and a steady-state sum yield was 2.1% with 63% selectivity at 1173 K. Characterization studies using temperature-programed X-ray diffraction (TP-XRD) and scanning electron microscopy (SEM) indicated that the working state of indium catalyst was liquid metal. Effects of reaction temperature on the product distribution and studies of temperature-programed-reaction (TPR) indicated that liquid-metal indium activated methane and selectively converted to ethane. Higher hydrocarbons were produced from ethane in the gas phase without catalyst.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/slct.201700734
  DOI ID：10.1002/slct.201700734
• Selective Electrohydrogenation of Toluene to Methylcyclohexane Using Carbon-Supported Non-Platinum Electrocatalysts in the Hydrogen Storage System　　　　　　　　　　　　　　　
  Inami Yuta; Ogihara Hitoshi; Yamanaka Ichiro
  CHEMISTRYSELECT, Volume：2, Number：5, First page：1939, Last page：1943, Feb. 2017, [Reviewed]
  Electrochemical hydrogenation of toluene (TL) to methylcyclohexane (MCH) with water using a 50 wt% Pt/Ketjenblack (KB) cathode attracts much attention for the hydrogen storage system. We screened non-Pt cathodes and found that lower loading Ru/KB electrocatalyst was effective cathode for the galvanostatic hydrogenation of TL. Even at 1 wt% loading, the Ru/KB cathode was active for the hydrogenation though the working potential was much negative; on the other hand, a 1 wt% Pt/KB cathode was inactive under the same conditions. To improve electrocatalysis of Ru/KB at positive cathode potential, combination of Ru and other metals was studied for the hydrogenation and synergy of Ru and Ir was found. A 5 wt% Ru and 5 wt% Ir supported on KB cathode was as active as the 50 wt% Pt/KB cathode for the hydrogenation. On the basis of experimental facts, a model of reaction mechanism for the electrohydrogenation of TL to MCH applying hydrogen spill-over from Ir to Ru was proposed.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/slct.201602070
  DOI ID：10.1002/slct.201602070
• A New Type Hydrogen Permeable Membrane and Application for H2O2 Synthesis　　　　　　　　　　　　　　　
  Yamanaka Ichiro; Satake Yuichiro; Pantira Privatananupunt; Hiraki Daisuke; Ogihara Hitoshi
  CHEMISTRYSELECT, Volume：2, Number：1, First page：464, Last page：468, Jan. 2017, [Reviewed]
  Development of a hydrogen permeable membrane reactor in chemical process has been desired because of a great reduction of energy consumption. Previous studies were limited to Pd membranes. A new type of hydrogen permeable membrane layered three sheets (a reduction-Pt-catalyst sheet broken vertical bar a proton and electron co-conductive sheet broken vertical bar an oxidation-Ptcatalyst sheet) was developed. The middle sheet was prepared by casting a paste of carbon powder and Nafion solution. When a gas mixture of H-2 and He (1: 1) was introduced to the oxidation-catalyst compartment at 298 K, a high concentration of H-2 was observed in the reduction-catalyst compartment, a maximum H-2/He ratio as 217. H-2 selectively permeated through the membrane. This concept was applied for synthesis of H2O2. When O-2 and H-2 were respectively introduced to the Co-N -C reduction-catalyst and the Pt oxidation-catalyst, production of a pure H2O2 aqueous solution of 3.8 mol dm (-3) was succeeded with a good selectivity as 42% based on H2 at 278 K.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/slct.201601321
  DOI ID：10.1002/slct.201601321
• Electrochemical Reduction of CO2 to CO by a Co-N-C Electrocatalyst and PEM Reactor at Ambient Conditions　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Tomomi Maezuru; Yuji Ogishima; Ichiro Yamanaka
  CHEMISTRYSELECT, Volume：1, Number：17, First page：5533, Last page：5537, Oct. 2016, [Reviewed]
  Selective electrochemical reduction of CO2 to CO was studied using a new electrocatalyst and a gas-electrolysis cell utilized a polymer-electrolyte-membrane (PEM) reactor. A selective and active electrocatalyst was prepared by partial pyrolysis of electrocatalyst precursor of Co-4,4'-dimethyl-2,2'-bipyridine (4,4'-dmbpy) supported on Ketjenblack (KB). A heat-treatment temperature of the Co-4,4'-dmbpy/KB significantly influenced on its electrocatalytic activity and 573 similar to 673 K treatments were suitable for a selective CO2 reduction. A high performance of CO formation (331 mu mol h(-1) cm(-2), 217 TOF(Co) h(-1)) at 20 mA cm(-2) with 72% faradic efficiency was performed by using the optimized Co-4,4'-dmbpy/KB electrocatalyst at -0.75 V (SHE) and 273 K. Electrochemical silent Co species in CV studies promoted electrochemical reduction of CO2 to CO.
  WILEY-V C H VERLAG GMBH, English, Scientific journal
  DOI：https://doi.org/10.1002/slct.201601082
  DOI ID：10.1002/slct.201601082, ISSN：2365-6549, Web of Science ID：WOS:000395425400022
• Development of supported-metal catalysts for dehydrogenative multimerization of methane　　　　　　　　　　　　　　　
  Ogihara Hitoshi; Nishikawa Yuta; Ohbuchi Syunya; Yamanaka Ichiro
  Proceeding of Annual/Fall Meetings of the Japan Petroleum Institute, Volume：2016, First page：18, Last page：18, 2016
  メタンの脱水素的な多量化反応に活性を示す担持金属触媒の開発を行った。インジウム、ガリウム、ビスマス等の典型金属をシリカや炭素に担持すると、高選択的にエタン、エチレン、ベンゼン等が生成した。これらの金属は反応条件（1173 K）において液体であり、液相でメタン活性化を触媒したと考えられる。反応経路に関する検討の結果、メタンからエタンへの脱水素的カップリングに担持金属触媒が関わっており、以降は無触媒的にエタンが脱水素多量化して高級炭化水素が生成することが示唆された。
  The Japan Petroleum Institute, Japanese
  DOI：https://doi.org/10.11523/sekiyu.2016.0_18
  DOI ID：10.11523/sekiyu.2016.0_18, CiNii Articles ID：130005166496
• Dehydrogenative oligomerization of methane by Indium metal-liquid catalyst　　　　　　　　　　　　　　　
  Nishikawa Yuta; Ogihara Hitoshi; Yamanaka Ichiro
  Proceeding of Annual/Fall Meetings of the Japan Petroleum Institute, Volume：2016, First page：121, Last page：121, 2016
   We stuided dehydrogenative oligomerrization of methane to ethylene, ethane, propylene, benzene, naphthalene by indium metal-liquid catalyst at 1173 K. The reaction mechanisms and catalysis will be discussed.
  The Japan Petroleum Institute, Japanese
  DOI：https://doi.org/10.11523/sekiyu.2016f.0_121
  DOI ID：10.11523/sekiyu.2016f.0_121, CiNii Articles ID：130005295634
• Electrosynthesis of diphenyl carbonate by homogeneous Pd electrocatalysts using Au nanoparticles on graphene as efficient anodes　　　　　　　　　　　　　　　
  Ryoichi Kanega; Hitoshi Ogihara; Ichiro Yamanaka
  CATALYSIS SCIENCE & TECHNOLOGY, Volume：6, Number：15, First page：6002, Last page：6010, 2016, [Reviewed]
  Electrochemical carbonylation of phenol (PhOH) with CO (1 atm) to form diphenyl carbonate (DPC) was studied by using a Pd-(in situ NHC) electrocatalyst and graphene-supported Au nanoparticle (Au NPs/GR) anodes. An in situ NHC (N-heterocyclic carbene) was generated from 1,3-di(tert-butyl) imidazoline chloride (SIt-BuHCl) during electrolysis. The Au NPs/GR anodes prepared by impregnation and liquid-phase reduction methods were characterized by using transmission electron microscopy, X- ray diffraction, and inductively coupled plasma spectroscopy. Au NPs on carbon supports with a wide range of particle sizes were prepared by choosing the preparation conditions such as the type of reducing agent, reduction temperature, and the use of a stabilizer. The particle size of Au on the anode influenced the electrosynthesis of DPC by the Pd electrocatalyst. The formation rate and the current efficiency of DPC were high when smaller Au NPs were used as anodes. Cyclic voltammetry studies of the electrochemical system indicated that the oxidation rate of Pd-0 was accelerated at smaller Au NPs. As the electrolysis current increases, the contribution of anodic side-reactions becomes major at large Au particle anodes; as a result, the current efficiency of DPC formation decreases. On the other hand, smaller Au NP anodes efficiently enhanced the DPC formation by the Pd electrocatalyst under severe electrolysis conditions, and relatively high formation rate and current efficiency of DPC were achieved.
  ROYAL SOC CHEMISTRY, English, Scientific journal
  DOI：https://doi.org/10.1039/c6cy00400h
  DOI ID：10.1039/c6cy00400h, ISSN：2044-4753, eISSN：2044-4761, Web of Science ID：WOS:000381431200024
• Electrosynthesis of diphenyl carbonate catalyzed by Pd2+/0 (in situ NHC) redox catalyst promoted at Au anode　　　　　　　　　　　　　　　
  Ryoichi Kanega; Hitoshi Ogihara; Ichiro Yamanaka
  RESEARCH ON CHEMICAL INTERMEDIATES, Volume：41, Number：12, First page：9497, Last page：9508, Dec. 2015, [Reviewed]
  The effects of Au anodes on electrochemical carbonylation of phenol with CO (1 atm) to diphenyl carbonate (DPC) catalyzed by Pd (in situ NHC) electrocatalyst were studied under galvanostatic electrolysis conditions. Au supported on carbon materials (Au/carbon) were effective anodes for oxidation of the homogeneous Pd electrocatalyst. Various carbon materials, Vulcan XC-72 carbon black (XC72), activate carbon, Ketjenblack, and graphene nanoplatelets (graphene-1, -2, -3) were tested as a support for Au. The Au/graphene-3 was the most effective anode for DPC formation. Effects of Au loadings and reducing agents (H-2 and NaBH4) on the reactivity of the Au/graphene-3 anode for the DPC formation were studied and the materials were characterized using XRD spectroscopy and TEM analysis. These experimental facts indicated that small Au particles on the surface of graphene were superior for the DPC synthesis by the Pd (in situ NHC) electrocatalyst.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s11164-015-1975-8
  DOI ID：10.1007/s11164-015-1975-8, ISSN：0922-6168, eISSN：1568-5675, Web of Science ID：WOS:000365743300027
• Electrochemical behaviour of superhydrophobic coating fabricated by spraying a carbon nanotube suspension　　　　　　　　　　　　　　　
  L. Belsanti; H. Ogihara; S. Mahanty; G. Luciano
  BULLETIN OF MATERIALS SCIENCE, Volume：38, Number：2, First page：579, Last page：582, Apr. 2015, [Reviewed]
  In this study, superhydrophobic films were prepared through a spraying process of carbon nanotube (CNT) suspension on aluminium alloy substrate and characterized by scanning electronic microscope (SEM) contact angles (CAs) and potentiodynamic polarization tests in 0.1 M NaCl solution. Results indicate the positive effect of superhydrophobic film on the CA (> 160A degrees) in comparison with the bare metal due to the high porosity density at the surface caused by the presence of CNTs. The electrochemical observations indicate the presence of a positive shift of E (corr) that confers a better corrosion resistance of the coated samples.
  INDIAN ACAD SCIENCES, English, Scientific journal
  DOI：https://doi.org/10.1007/s12034-015-0866-3
  DOI ID：10.1007/s12034-015-0866-3, ISSN：0250-4707, eISSN：0973-7669, Web of Science ID：WOS:000353831200038
• Mutilmerization of methane by dehydrogenative oxidation using indium catalyst　　　　　　　　　　　　　　　
  Nishikawa Yuta; Ogihara Hitoshi; Yamanaka Ichiro
  Proceeding of Annual/Fall Meetings of the Japan Petroleum Institute, Volume：2015, First page：139, Last page：139, 2015
  メタンの脱水素酸化反応による多量化反応に活性な新規触媒の探索を行った。その結果、シリカ担持インジウム触媒が良好な触媒作用を示すことを見出した。反応温度1173 Kにおいて転化率4 %以上の定常活性を示し、エタン、エチレン、プロピレン、ベンゼン、トルエン、ナフタレン等が生成し、全生成物合成の選択率は70 %であった。残りは炭素析出であり、これらに見合った水素が生成した。この触媒の詳細について発表する。
  The Japan Petroleum Institute, Japanese
  DOI：https://doi.org/10.11523/sekiyu.2015f.0_139
  DOI ID：10.11523/sekiyu.2015f.0_139, CiNii Articles ID：130005484578
• Controlling surface energy of glass substrates to prepare superhydrophobic and transparent films from silica nanoparticle suspensions　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Jing Xie; Tetsuo Saji
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：437, First page：24, Last page：27, Jan. 2015, [Reviewed]
  We fabricated superhydrophobic and transparent silica nanoparticle (SNP) films on glass plates via spray-coating technique. When suspensions containing 1-propanol and hydrophobic SNPs were sprayed over glass plates that were modified with dodecyl groups, superhydrophobic and transparent SNP films were formed on the substrates. Surface energy of the glass plates had a significant role to obtain superhydrophobic and transparent SNP films. SNP films did not show superhydrophobicity when bare glass plates were used as substrates, because water droplets tend to adhere the exposed part of the hydrophilic glass plate. Glass plates having extreme low surface energy were not also suitable because suspension solution was repelled from the substrates, which resulted in forming non-uniform SNP films. (c) 2014 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2014.09.021
  DOI ID：10.1016/j.jcis.2014.09.021, ISSN：0021-9797, eISSN：1095-7103, Web of Science ID：WOS:000345109000004
• Spraying carbon nanotube dispersions to prepare superhydrophobic films　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Jing Xie; Tetsuo Saji
  J. Mater. Sci., Volume：49, Number：8, First page：3183, Last page：3188, Apr. 2014, [Reviewed]
  Carbon nanotubes (CNTs) are a promising material for superhydrophobic coating. In the present study, we prepared superhydrophobic CNT films by spraying CNT dispersions, and discussed the factors that control superhydrophobicity of the CNT films. Three types of dispersions (i.e., CNTs/ethanol, CNTs functionalized with dodecyl groups/ethanol, and CNTs and trimethylsiloxysilicate (TMSS)/ethanol) were prepared as spraying solutions. As increasing the amount of spray-coated CNTs, hydrophobicity of the resulting films became higher, and eventually superhydrophobicity was observed. The spray-coated CNT films had hierarchical roughness, which is preferable morphology to show superhydrophobicity. The coexistence of TMSS in the film lowered the amount of CNTs required to show superhydrophobicity because TMSS acted like glue that prevented CNTs from aggregating on substrates. Interaction force of CNTs also affected the wettability of the CNT films. The pi-pi interaction of CNTs resulted in the aggregation of them on substrates, which lowered the wettability of the films. From this viewpoint, functionalization of CNTs with dodecyl groups was effective to form superhydrophobic films because the dodecyl groups on CNTs screened the pi-pi interaction of CNTs.
  SPRINGER, English, Scientific journal
  DOI：https://doi.org/10.1007/s10853-014-8021-x
  DOI ID：10.1007/s10853-014-8021-x
• Electrodeposition of Ni-B/SiC composite films with high hardness and wear resistance　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Hui Wang; Tetsuo Saji
  Appl. Surf. Sci., Volume：296, First page：108, Last page：113, Mar. 2014, [Reviewed]
  Ni-B/SiC composite films were electrodeposited using conventional Ni electrodeposition baths containing trimethylamine borane and SiC particles. In the present study, we examined the effect of SiC particle size, concentration of SiC particles in electrodeposition baths, thermal treatment, and current density on the properties (i.e., film hardness, SiC content, crystallite structure, and wear resistance) of the electrodeposited Ni-B/SiC composite films. The hardness of the composite films depended on the concentration of SiC particles in the baths; baths containing 1 and 8 g/L of SiC particles provided Ni-B/SiC films with a film hardness of 760 and 858 HV, respectively, which is because the SiC content in the composite films increased with increasing SiC particle concentration in the baths. Current density also affected the hardness of the composite films because both the SiC content and hardness of the Ni-B matrix changed with current density. Thermal treatment at 573 K in air had a significant influence on film hardness; for example, the hardness of Ni-B/SiC composite films was changed from 845 HV to 1499 HV after the thermal treatment. XRD patterns of the composite films revealed that thermal treatment results in a structural change of the Ni-B matrix from an X-ray amorphous structure to a crystalline Ni metal and Ni3B alloy, which leads to hardening of the composite films. Moreover, the Ni-B/SiC composite film showed higher anti-wear performance than Ni/SiC and Ni-P/SiC. (C) 2014 Elsevier B. V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.apsusc.2014.01.057
  DOI ID：10.1016/j.apsusc.2014.01.057
• Hydrogen evolution reaction (HER) over electroless-deposited nickel nanospike arrays　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Mizuho Fujii; Tetsuo Saji
  RSC Advances, Volume：4, Number：102, First page：58660, Last page：58663, 2014, [Reviewed]
  The hydrogen evolution reaction (HER) was carried out over Ni nanospike arrays prepared by electroless deposition. The Ni nanospike arrays showed higher HER activity than Ni plates and electrodeposited Ni because their nano-sized roughness results in a high surface area.
  ROYAL SOC CHEMISTRY, English, Scientific journal
  DOI：https://doi.org/10.1039/c4ra11646a
  DOI ID：10.1039/c4ra11646a
• Factors determining wettability of superhydrophobic paper prepared by spraying nanoparticle suspensions　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Jing Xie; Tetsuo Saji
  Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume：434, First page：35, Last page：41, Oct. 2013, [Reviewed]
  Superhydrophobic paper was prepared by spraying nanoparticle suspensions onto paper substrates. In this work, we examined factors that determine superhydrophobicity of nanoparticle films on paper. Since used oxide nanoparticles (i.e., SiO2, Al2O3 and TiO2) are naturally hydrophilic due to the presence of surface hydroxyl groups, they were treated with silane coupling agents to lower their surface energy. Type of the silane coupling agents affected the wettability of the nanoparticle film, and superhydrophobic paper was obtained when using silane coupling agents with longer alkyl chains than a hexyl group. In addition, type of oxide nanoparticles had an influence on the wettability of the nanoparticle films because both amounts of residual hydroxyl groups and coating behavior of nanoparticles depended on type of the inorganic oxides. A water droplet bounced on the superhydrophobic paper, indicating its high water repellency. © 2013 Elsevier B.V.
  Elsevier B.V., English, Scientific journal
  DOI：https://doi.org/10.1016/j.colsurfa.2013.05.034
  DOI ID：10.1016/j.colsurfa.2013.05.034, ISSN：1873-4359, SCOPUS ID：84878940433
• Microcontact printing of pigment/polymer composite microdots and electrodeposition of Ni walls to fabricate hard and glossy-colored films　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Hiro Kibayashi; Tetsuo Saji
  SURFACE & COATINGS TECHNOLOGY, Volume：216, First page：115, Last page：120, Feb. 2013, [Reviewed]
  Pigment/polymer composite microdots surrounded by honeycomb-shaped Ni walls were prepared to form hard and glossy-colored films. The pigment/polymer microdots were transferred onto bright Ni substrates using rnicrocontact printing (mu CP), and subsequently, electrodeposition of Ni was carried out to grow honeycomb Ni walls between the microdots. The colors of the films could be controlled by the types of pigment used, and the colored films showed a glossy appearance because of the presence of the bright Ni substrate and the Ni walls, which are desirable properties in decorative surface finishing. Moreover, the films showed high film hardness. Because the height of the Ni walls was higher than that of the microdots, the Ni walls protected the microdots from physical damage, leading to excellent mechanical strength of the coatings in pencil hardness tests and adhesion tests. (C) 2012 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE SA, English, Scientific journal
  DOI：https://doi.org/10.1016/j.surfcoat.2012.11.034
  DOI ID：10.1016/j.surfcoat.2012.11.034, ISSN：0257-8972, Web of Science ID：WOS:000315837700013
• Effect of electrodeposition conditions on hardness of Ni-B/diamond composite films　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Mohd Safuan; Tetsuo Saji
  SURFACE & COATINGS TECHNOLOGY, Volume：212, First page：180, Last page：184, Nov. 2012, [Reviewed]
  Ni-B/diamond composite films were prepared via electrodeposition. Ni-B matrix and co-deposited diamond particles have very high hardness, so the Ni-B/diamond composite films also showed high hardness. The film hardness of the Ni-B/diamond composite film was ca. 3000 Hv at the most, which is approximately the same hardness as for previously reported super-hard films. The film hardness depended on the diamond content in the films and the size of co-deposited diamond particles. The diamond content can be controlled by electrodeposition conditions such as the concentration of diamond in baths and the current density. The composite films with higher diamond content and larger diamond particles showed higher hardness. Moreover, thermal-treatment at 573 K in air hardened the Ni-B/diamond composite films. In this paper, the co-deposition process of diamond particles is discussed based on the classical mechanism for composite plating. (c) 2012 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE SA, English, Scientific journal
  DOI：https://doi.org/10.1016/j.surfcoat.2012.09.045
  DOI ID：10.1016/j.surfcoat.2012.09.045, ISSN：0257-8972, Web of Science ID：WOS:000312760000023
• Microcontact Printing for Patterning Carbon Nanotube/Polymer Composite Films with Electrical Conductivity　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Hiro Kibayashi; Tetsuo Saji
  ACS APPLIED MATERIALS & INTERFACES, Volume：4, Number：9, First page：4891, Last page：4897, Sep. 2012, [Reviewed]
  Patterned carbon nanotube (CNT)/acrylic resin composite films were prepared using microcontact printing (mu CP). To prepare ink for mu CP, CNTs were dispersed into propylene glycol monomethyl ether acetate (PGMEA) solution in which acrylic resin and a commercially available dispersant (Disperbyk-2001) dissolved. The resulting ink were spin-coated onto poly(dimethylsiloxane) (PDMS) stamps. By drying solvent components from the ink, CNT/polymer composite films were prepared over PDMS stamps. Contact between the stamps and glass substrates provided CNT/polymer composite patternings on the substrates. The transfer behavior of the CNT/polymer composite films depended on the thermal-treatment temperature during mu CP; thermal treatment at temperatures near the glass-transition temperature (T-g) of the acrylic resin was effective to form uniform patternings on substrates. Moreover, contact area between polymer and substrates also affect the transfer behavior. The CNT/polymer composite films showed high electrical conductivity, despite the nonconductivity of polymer components, because CNTs in the films were interconnected. The electrical conductivity of the composite films increased as CNT content in the film became higher; as a result, the composite patternings showed almost as high electrical conductivity as previously reported CNT/polymer bulk composites.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/am3012214
  DOI ID：10.1021/am3012214, ISSN：1944-8244, Web of Science ID：WOS:000309099800064
• Electrophoretic Deposition of Composite Phthalocyanine Films with Inorganic Particles Using Organic Solutions Containing Trifluoroacetic Acid　　　　　　　　　　　　　　　
  IMAMURA Mitsuharu; SHRESTHA Nabeen K.; OGIHARA Hitoshi; SAJI Tetsuo
  The Pigments,Paints and Printing Inks, Volume：85, Number：7, First page：279, Last page：282, Jul. 2012
  Composite blue films of inorganic particles (SiO₂, Al₂O₃ and TiO₂) with phthalocyanine (MPc, M = Cu and Pb) were prepared by electrophoresis of protonated MPc using dichloromethane solutions containing trifluoroacetic acid, particles and MPc. The charging of the particles by the adsorption of protonated MPc species from the solution was ascribed to the electrophoresis of these particles. In this way, composite film of MPc with the inorganic particles was formed. SEM images of the composite film reveal a uniform distribution of the particles throughout the composite film, and most of the particles were bonded by fibrous MPc crystallites.
  Japan Society of Colour Material, English
  DOI：https://doi.org/10.4011/shikizai.85.279
  DOI ID：10.4011/shikizai.85.279, ISSN：0010-180X, CiNii Articles ID：10030774295, CiNii Books ID：AN00354634
• Simple Method for Preparing Superhydrophobic Paper: Spray-Deposited Hydrophobic Silica Nanoparticle Coatings Exhibit High Water-Repellency and Transparency　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Jing Xie; Jun Okagaki; Tetsuo Saji
  LANGMUIR, Volume：28, Number：10, First page：4605, Last page：4608, Mar. 2012, [Reviewed]
  Superhydrophobic and transparent coatings are deposited onto paper by spraying alcohol suspensions of SiO2 nanoparticles. Superhydrophobicity depends on the aggregation states cif nanoparticles, which are determined by the type of alcohol used in the suspensions. The superhydrophobicity of the paper is maintained after touching the paper with a bare finger.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/la204492q
  DOI ID：10.1021/la204492q, ISSN：0743-7463, Web of Science ID：WOS:000301397100002
• Hard and Glossy-Colored Films Composed of Micropatterned Organic Dots and Electrodeposited Honeycomb-Shaped Nickel Walls　　　　　　　　　　　　　　　
  Hiro Kibayashi; Hitoshi Ogihara; Yosuke Hayano; Tetsuo Saji
  ACS APPLIED MATERIALS & INTERFACES, Volume：4, Number：2, First page：590, Last page：592, Feb. 2012, [Reviewed]
  This paper proposes a novel approach for the preparation of colored films with a metallic luster and high hardness. The colored organic films were patterned as microdots by photolithography, and then honeycomb-shaped Ni walls were electrodeposited between the micropatterning. The organic/inorganic composite films showed the hardest grade in a pencil hardness test and high durability in wear resistance, tests because the honeycomb-shaped Ni, walls protected the colored organic dots.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/am2016552
  DOI ID：10.1021/am2016552, ISSN：1944-8244, Web of Science ID：WOS:000300644500014
• Effect of boron content and crystalline structure on hardness in electrodeposited Ni-B alloy films　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Kaori Udagawa; Tetsuo Saji
  SURFACE & COATINGS TECHNOLOGY, Volume：206, Number：11-12, First page：2933, Last page：2940, Feb. 2012, [Reviewed]
  Ni-B alloy films were electrodeposited using a conventional Ni plating bath containing dimethylamine borane (DMAB) or trimethylamine borane (TMAB) as boron sources. Properties (hardness, boron content, and crystalline structure) of the electrodeposited Ni-B alloy films were significantly affected by electrodeposition conditions (current density, pH, and the amount of boron sources in plating bath). X-ray amorphous Ni-B alloy films showed high hardness, whereas hardness of Ni-B alloy films that consisted of large crystallites was low. In TMAB bath, the crystalline structure of Ni-B alloy films was controlled by the amount of co-deposited boron atoms; however in DMAB bath, clear relationship between film hardness and boron content was not confirmed. The crystalline structure of Ni-B films was drastically changed by heat-treatment and the effect of structural changes on hardness was discussed. (C) 2011 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE SA, English, Scientific journal
  DOI：https://doi.org/10.1016/j.surfcoat.2011.12.025
  DOI ID：10.1016/j.surfcoat.2011.12.025, ISSN：0257-8972, Web of Science ID：WOS:000301017300028
• Fabrication of patterned carbon nanotube thin films using electrophoretic deposition and ultrasonic radiation　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Masaru Fukasawa; Tetsuo Saji
  CARBON, Volume：49, Number：13, First page：4604, Last page：4607, Nov. 2011, [Reviewed]
  A simple wet-deposition method for preparing patterned carbon nanotube (CNT) thin films is reported. Using electrophoretic deposition (EPD), CNTs were deposited over indium tin oxide (ITO) plates that had been patterned with a photoresist; consequently, CNTs covered not only the exposed ITO areas but also the photoresist areas because thinness of the photoresists could not prevent the transverse deposition of CNTs over the photoresist areas. The ultrasonic treatment for the samples removed only CNTs on the photoresist areas, resulting in the formation of patterned CNT thin films, because Ni metal formed during EPD connects CNTs to ITO plates. (C) 2011 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.carbon.2011.06.081
  DOI ID：10.1016/j.carbon.2011.06.081, ISSN：0008-6223, Web of Science ID：WOS:000294645700061
• One-step electrophoretic deposition for the preparation of superhydrophobic silica particle/trimethylsiloxysilicate composite coatings　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Takafumi Katayama; Tetsuo Saji
  JOURNAL OF COLLOID AND INTERFACE SCIENCE, Volume：362, Number：2, First page：560, Last page：566, Oct. 2011, [Reviewed]
  SiO(2) particle/silicone resin (trimethylsiloxysilicate (TMSS)) composite coatings were prepared by electrophoretic deposition (EPD), and their wettability was examined. SiO(2) coatings prepared by EPD baths without TMSS were hydrophilic, while superhydrophobicity was observed for SiO(2)/TMSS composite coatings. IR spectra and EDS analyses revealed that not only SiO(2) particles but also TMSS electrophoretically moved toward a cathode; as a result, hydrophilic SiO(2) particles turned into superhydrophobic composite coatings by one-step EPD. SEM and AFM images of the superhydrophobic SiO(2)/TMSS composite coatings showed the presence of both nanometer- and micrometer-sized roughness in their surfaces. Particle size of SiO(2) had a great influence on the wettability of the composite coatings. The superhydrophobic SiO(2)/TMSS composite coatings showed excellent water repellency; they repelled running water continuously. In addition, by controlling the amount of deposited SiO(2) particles and TMSS, transparent superhydrophobic SiO(2)/TMSS composite coatings were prepared. (C) 2011 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcis.2011.06.050
  DOI ID：10.1016/j.jcis.2011.06.050, ISSN：0021-9797, Web of Science ID：WOS:000294142500041
• Electrodeposition of Super Hard Ni-B/Diamond Composite Coatings　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Kazuyuki Miyamoto; Kaori Udagawa; Tetsuo Saji
  CHEMISTRY LETTERS, Volume：40, Number：10, First page：1072, Last page：1073, Oct. 2011, [Reviewed]
  Super hard Ni-B/diamond composite coatings were prepared by electrodeposition. Such extreme hardness (ca. 2500 Hv) was ascribed to a large content of diamond particles and hardness of Ni-B matrix. Thermal treatment of the coatings resulted in the formation of Ni-B alloys, which led to increase in film hardness. This method is much simpler than previously reported methods for preparing hard coatings.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2011.1072
  DOI ID：10.1246/cl.2011.1072, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000296937800004
• Facile Fabrication of Colored Superhydrophobic Coatings by Spraying a Pigment Nanoparticle Suspension　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Jun Okagaki; Tetsuo Saji
  LANGMUIR, Volume：27, Number：15, First page：9069, Last page：9072, Aug. 2011, [Reviewed]
  Superhydrophobic coatings were prepared by spraying a pigment nanoparticle suspension. By changing the type of pigment nanoparticles, the colors of the coating could be controlled. The particle size of the pigments, which determines the surface structure of the coatings, played an important role in exhibiting superhydrophobicity. The spray-coating process is applicable to a variety of materials (e.g., copper, glass, paper, coiled wire, and tied thread), and the superhydrophobicity was repairable.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/la200898z
  DOI ID：10.1021/la200898z, ISSN：0743-7463, Web of Science ID：WOS:000293035300001
• Method for Patterning Various Nanomaterials: Electrochemical Deposition of Patterned Ni Thin Films and Their Utilization as a Strippable Mask　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Masaru Fukasawa; Tetsuo Saji
  ACS APPLIED MATERIALS & INTERFACES, Volume：3, Number：6, First page：2108, Last page：2111, Jun. 2011, [Reviewed]
  We report an interesting approach for preparing micro-patternings of nanomaterials, such as carbon nanotubes and TiO(2) nanoparticles. In the method, exfoliation of electrodeposited Ni thin films was the key process. After patterning indium thin oxide (ITO) plates with an insulating photoresist by conventional photolithography, Ni was electrodeposited on only the exposed ITO areas. The resulting substrates were evenly covered with nanomaterials by a drop cast method. By exfoliating the electrodeposited Ni thin films from the substrates, patterned nanomaterial films were formed.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/am200325b
  DOI ID：10.1021/am200325b, ISSN：1944-8244, Web of Science ID：WOS:000291781800046
• Nano-scale deposition of hydroxyapatite on bioactive and bioinert fibers using carbon nanofibers as templates　　　　　　　　　　　　　　　
  Qiang Wu; Masahiro Sadakane; Hitoshi Ogihara; Wataru Ueda
  APPLICATION OF CHEMICAL ENGINEERING, PTS 1-3, Volume：236-238, First page：2122, Last page：+, 2011, [Reviewed]
  The synthesis of nano-scale hydroxyapatite (HAp) could be achieved by using carbon nanofibers (CNFs) as templates. It was shown that both silica fiber and alumina fiber are suitable substrates for the growth of CNFs templates by chemical vapor deposition (CVD) technique. It turned out that the resulting CNFs could act as promising and effective templates for nano-scale deposition of HAp on the fiber surface. However, CNFs obtained from silica fiber performed better than those grown from alumina fiber for uniform deposition of HAp on the surface.
  TRANS TECH PUBLICATIONS LTD, English, International conference proceedings
  DOI：https://doi.org/10.4028/www.scientific.net/AMR.236-238.2122
  DOI ID：10.4028/www.scientific.net/AMR.236-238.2122, ISSN：1022-6680, Web of Science ID：WOS:000302924101023
• Electroless deposited robust Ni-B films coated with trimethylsiloxysilicate exhibit superhydrophobicity　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Takafumi Katayama; Tetsuo Saji
  JOURNAL OF MATERIALS CHEMISTRY, Volume：21, Number：38, First page：14890, Last page：14896, 2011, [Reviewed]
  We prepared electroless deposited Ni-B alloy films treated with trimethylsiloxysilicate (TMSS) that showed superhydrophobicity. Hydrophilic electroless deposited Ni-B films were made to be superhydrophobic by immersing them into an ethanolic solution of TMSS and water. This treatment lowered the surface energy of the electroless deposited Ni-B alloy films because hydrophobic TMSS was immobilized on them. A small amount of coexisting water promoted this immobilization process. In addition, the electroless deposition time had significant influence on the wettability of Ni-B films because micro-and nanometre-sized roughness was developed with the prolonged electroless deposition time. The superhydrophobic Ni-B films continuously repelled running water, and superhydrophobicity was maintained after rubbing them with bare fingers.
  ROYAL SOC CHEMISTRY, English, Scientific journal
  DOI：https://doi.org/10.1039/c1jm12303c
  DOI ID：10.1039/c1jm12303c, ISSN：0959-9428, Web of Science ID：WOS:000295101000079
• Electrophoretic Deposition of Phthalocyanine in Organic Solutions Containing Trifluoroacetic Acid　　　　　　　　　　　　　　　
  Nabeen K. Shrestha; Hideki Kohn; Mitsuharu Imamura; Kazunobu Irie; Hitoshi Ogihara; Tetsuo Saji
  LANGMUIR, Volume：26, Number：22, First page：17024, Last page：17027, Nov. 2010, [Reviewed]
  The absorption spectra of copper phthalocyanine (CuPc) 1,2-dichloroethane (DCE) solutions containing trilluoroacetic acid (TFAA) shows that the number of protons coordinating to the CuPc molecule was 1 and 2 for the first and second proton adducts, respectively, which indicates the formations of CuPcH(+). and CuPcH(2)(2+). This CuPc molecule may act as a catalyst to dissociate TFAA into trifluoroacetate;union (A(-)) and H(+) and form the proton adducts. The electrical conductivity dependence of the solution on CuPc concentration also supports this mechanism. A dense film of CuPc was deposited on an indium tin oxide cathode plate by electrophoresis of the solution. Similar dense films of a wide variety of phthalocyanines (MPc; M = Cu, H(2), Fe, Ni, Zn, Pb, VO) were also deposited using this method. Similar films of CuPc were also formed using dichloromethane (DCM) and 1,1,1-trichloroethane (ICE) in place of DCE. Depositions are ascribed to the migration of positively charged monomers (i.e., protonated MPc). Scanning electron microscopy revealed that these films are composed of fibrous crystallites, size of which was found to increase with the electrophoresis time, the strength of the applied electrical field and the concentration of CuPc in the bath. The influence of the dielectric constant of the organic solvent on the film growth is discussed.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/la102172t
  DOI ID：10.1021/la102172t, ISSN：0743-7463, Web of Science ID：WOS:000283837800055
• Immobilization of nanofibrous A- or B-site substituted LaMnO3 perovskite-type oxides on macroscopic fiber with carbon nanofibers templates　　　　　　　　　　　　　　　
  Qiang Wu; Masahiro Sadakane; Hitoshi Ogihara; Wataru Ueda
  MATERIALS RESEARCH BULLETIN, Volume：45, Number：9, First page：1330, Last page：1333, Sep. 2010, [Reviewed]
  The immobilization of nanofibrous A- or 8-site substituted LaMnO3 perovskite-type oxides on macroscopic silica fiber via a unique and facile carbon nanofibers (CNFs) template-based method was reported. Field emission scanning electron microscopy (FE-SEM), coupled with X-ray diffraction (XRD) analysis confirmed the template effect and the existence of nanofibrous materials immobilized on silica fiber. (C) 2010 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.materresbull.2010.05.030
  DOI ID：10.1016/j.materresbull.2010.05.030, ISSN：0025-5408, Web of Science ID：WOS:000281104900053
• Nano-Scale Hydroxyapatite Formation on Silica Fiber by Using Carbon Nanofibers as Templates　　　　　　　　　　　　　　　
  Qiang Wu; Masahiro Sadakane; Hitoshi Ogihara; Wataru Ueda
  JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, Volume：10, Number：8, First page：5431, Last page：5436, Aug. 2010, [Reviewed]
  Nano-scale hydroxyapatite particle network with uniform morphology and good crystallinity was fabricated on silica fiber by using carbon nanofibers as templates and with a methanol solution of Ca(NO(3))(2)center dot H(2)O-H(3)PO(4). Field emission scanning electron microscopy, coupled with X-ray diffraction analysis confirmed the template effect and the existence of hydroxyapatite on silica fiber. It was clearly verified that by tuning the formation of carbon nanofibers on silica fiber, it was possible to control the properties of the resulting hydroxyapatite on silica fiber. In addition, the formation mechanism of hydroxyapatite on silica fiber via the template route was proposed.
  AMER SCIENTIFIC PUBLISHERS, English, Scientific journal
  DOI：https://doi.org/10.1166/jnn.2010.1030
  DOI ID：10.1166/jnn.2010.1030, ISSN：1533-4880, Web of Science ID：WOS:000278056200098
• Synthesis and Applications of Mixed Oxide Nanotubes　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Masahiro Sadakane; Wataru Ueda
  INORGANIC AND METALLIC NANOTUBULAR MATERIALS: RECENT TECHNOLOGIES AND APPLICATIONS, Volume：117, First page：147, Last page：158, 2010, [Reviewed]
  Metal oxide nanotube is one of the nanostructured materials. Templates method, which is the technique in which templates are covered with metal oxides and the templates were removed to form metal oxide nanotubes, is a typical synthesis method for metal oxide nanotubes. In this section, synthesis of mixed oxide nanotubes using carbon nanofibers (CNFs) as templates is described. Because CNFs with various shapes were used as templates, oxide nanotubes with various shapes such as straight and helical were formed. Successive adsorption of metal oxide precursors on CNFs resulted in the formation of mixed oxide nanotubes with specific composition. In addition; a nano-macrostructured material, silica fiber-immobilized nanofibrous LaMnO3, was fabricated using this template process. In propane oxidation, the nano-macrostructured material showed superior activity to the conventional powder catalysts.
  SPRINGER-VERLAG BERLIN, English, In book
  DOI：https://doi.org/10.1007/978-3-642-03622-4_11
  DOI ID：10.1007/978-3-642-03622-4_11, ISSN：0303-4216, Web of Science ID：WOS:000279759300011
• Synthesis of super hard Ni-B/diamond composite coatings by wet processes　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Atsushi Hara; Kazuyuki Miyamoto; Nabeen K. Shrestha; Takeshi Kaneda; Shigenori Ito; Tetsuo Saji
  CHEMICAL COMMUNICATIONS, Volume：46, Number：3, First page：442, Last page：444, 2010, [Reviewed]
  Ni-B/diamond composite coatings were prepared using electrophoretic deposition and electroless deposition methods, leading to extremely high hardness which is comparable to hard coatings prepared by dry processes.
  ROYAL SOC CHEMISTRY, English, Scientific journal
  DOI：https://doi.org/10.1039/b914242h
  DOI ID：10.1039/b914242h, ISSN：1359-7345, Web of Science ID：WOS:000272992700024
• Synthesis, characterization and formation process of transition metal oxide nanotubes using carbon nanofibers as templates　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Sadakane Masahiro; Yoshinobu Nodasaka; Wataru Ueda
  JOURNAL OF SOLID STATE CHEMISTRY, Volume：182, Number：6, First page：1587, Last page：1592, Jun. 2009, [Reviewed]
  Mono and binary transition metal oxide nanotubes could be synthesized by the immersion of carbon nanofiber templates into metal nitrate solutions and removal of the templates by heat treatment in air. The transition metal oxide nanotubes were composed of nano-crystallites of metal oxides. The functional groups on the carbon nanofiber templates were essential for the coating of these templates: they acted as adsorption sites for the metal nitrates, ensuring a uniform metal oxide coating. During the removal of the carbon nanofiber templates by calcination in air, the metal oxide coatings promoted the combustion reaction between the carbon nanofibers and oxygen. (C) 2009 Published by Elsevier Inc.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jssc.2009.04.005
  DOI ID：10.1016/j.jssc.2009.04.005, ISSN：0022-4596, Web of Science ID：WOS:000266680400045
• A Facile Fabrication of Superhydrophobic Films by Electrophoretic Deposition of Hydrophobic Particles　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Jun Okagaki; Tetsuo Saji
  CHEMISTRY LETTERS, Volume：38, Number：2, First page：132, Last page：133, Feb. 2009, [Reviewed]
  We demonstrated a fabrication Of superhydrophobic colored films by the electrophoretic deposition (EPD) of hydrophobic pigment particles on substrates. The superhydrophobic films showed various colors such as black, white, blue, and green.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2009.132
  DOI ID：10.1246/cl.2009.132, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000264039600013
• Effect of hydrophilic group on thin film formation using redox-active surfactants with an azobenzene group　　　　　　　　　　　　　　　
  Haruko Fujita; Nabeen K. Shrestha; Hitoshi Ogihara; Tetsuo Saji
  ELECTROCHIMICA ACTA, Volume：53, Number：28, First page：8161, Last page：8165, Nov. 2008, [Reviewed]
  Thin films of organic pigments were prepared at higher than pH I by the contact plating method using an anionic surfactant (AZNa, first figure of this article (part c) (n = 4)) containing an azobenzene moiety. The effects of hydrophilic group of the surfactants on the rate of following reaction of the reduction product were studied by cyclic voltammetry. The positive shift of the reduction peak potential of AZNa compared to those of cationic and non-ionic surfactants was ascribed to higher rate of following reaction of reduction product due to the presence of the anionic hydrophilic group of the surfactant. The present investigation revealed that the anionic hydrophilic group accelerates the cleavage of the -N=N- bond of the azobenzene group. This phenomenon enabled us to prepare the organic thin film at higher pH condition. (C) 2008 Published by Elsevier Ltd.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.electacta.2008.03.024
  DOI ID：10.1016/j.electacta.2008.03.024, ISSN：0013-4686, Web of Science ID：WOS:000259835300009
• Effect of Pulse Current Electrolysis on the Mechanical Properties of Ni-SiC Composite Platings Using the Watts Bath Containing Sic Particles and Surfactants with an Azobenzene Group　　　　　　　　　　　　　　　
  KUSABIRAKI Kazuki; OGIHARA Hitoshi; IWATA Shun; SHRESTHA Nabeen K.; SAJI Tetsuo
  Jitsumu Hyomen Gijutsu, Volume：59, Number：9, First page：605, Last page：609, Sep. 2008
  In this study, we investigated composite plating of Ni-SiC by pulse current elelctrolysis using pyridinium (AZPy) and trimethyl ammonium (AZTAB) surfactants with an azobenzene group. The SiC content of Ni/SiC plating using 1μm SiC particles increased with an increase in the pulse frequency from 40vol.% to 60vol.%. This value increased to more than 70vol.% for 0.27μm SiC particles. The roughness of the plating for 1μm SiC particles decreased with an increase in the pulse frequency from 1.7μm to 0.5μm. This value decreased to 0.3μm for 0.27μm SiC particles, which is close to that of the substrate. The hardness of the Ni/SiC plating depended on the SiC content and the highest value obtained was 780Hv. This value was increased to 1340Hv by heat treatment of Ni-P/SiC plating.
  The Surface Finishing Society of Japan, Japanese
  DOI：https://doi.org/10.4139/sfj.59.605
  DOI ID：10.4139/sfj.59.605, ISSN：0915-1869, CiNii Articles ID：10024277614, CiNii Books ID：AN1005202X
• Three-dimensional analysis of carbon nanofibers by cross-sectional TEM observations　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Sakae Takenaka; Ichiro Yamanaka; Eishi Tanabe; Akira Genseki; Jun Koki; Kiyoshi Otsuka
  CHEMISTRY LETTERS, Volume：37, Number：8, First page：868, Last page：869, Aug. 2008, [Reviewed]
  Cross-sectional TEM images of carbon nanofibers formed through methane decomposition over Ni/SiO2 catalysts were observed by using all ultramicrotome. The TEM images indicated that carbon nanofibers have regular hexagonal prism structures.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2008.868
  DOI ID：10.1246/cl.2008.868, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000259590600029
• Nano-scale hydroxyapatite coating on macroscopic silica fiber using carbon nanofibers as templates　　　　　　　　　　　　　　　
  Qiang Wu; Hitoshi Ogihara; Hisaichiro Uchida; Masahiro Sadakane; Yoshinobu Nodasaka; Wataru Ueda
  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, Volume：81, Number：3, First page：380, Last page：386, Mar. 2008, [Reviewed]
  Starting from Ca(NO3)(2)-H3PO4-methanol precursor mixtures and using carbon nanotibers (CNFs) as templates, we have successfully coated nano-scale hydroxyapatite (HAp) layers on macroscopic silica fiber (diameter ca. 5 mu m) surfaces. Under controlled experimental conditions, CNFs can be formed on silica fiber with variable yield, layer thickness, and diameters, and thus can be further used as different templates for HAp coating. XRD, FE-SEM, and cross-sectional TEM experimental results provided clear evidence that CNFs can act as effective templates for uniform nano-scale HAp coating on silica fiber. It turned out that heat-treatment at 923 K for 5 h is sufficient for complete removal of the CNFs templates and crystallization of the resulting nano-scale HAp. It was shown that the resulting HAp layer thickness was ca. 2-4 mu m, the average crystallite size was ca. 20-40 nm, and the specific surface area was ca. 50-65 m(2) g(-1). In addition, it was clearly demonstrated that the average layer thickness and amount of HAp was controlled by the layer thickness of CNFs. Therefore, the coating mode of HAp could be reliably controlled through the selection of different kinds of CNFs templates.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/bcsj.81.380
  DOI ID：10.1246/bcsj.81.380, ISSN：0009-2673, eISSN：1348-0634, Web of Science ID：WOS:000255100200010
• Nano-structuring of complex metal oxides for catalytic oxidation　　　　　　　　　　　　　　　
  Wataru Ueda; Masahiro Sadakane; Hitoshi Ogihara
  CATALYSIS TODAY, Volume：132, Number：1-4, First page：2, Last page：8, Mar. 2008, [Reviewed]
  New crystalline solid materials Of Mo3VOx, having high-dimensional structures were synthesized in a single crystalline form using a hydrothermal method where the essential structural unit in the structure already presents in the preparative solution and the fundamental structure Of Mo3VOx, is formed as a result of self-organization between negatively charged pentagonal units and VO2+ cations. We also synthesized metal oxides by using organic solids with particular shapes as templates in order to create nano-macrostructures. Three-dimensionally ordered macroporous (3DOM) materials of polycrystalline spinel- and perovskite-type materials were fabricated using a colloidal crystal template method in extremely high yield. In the synthesis of oxide nanotubes, we demonstrate that various oxide nanotubes could be synthesized by the adsorption and hydrolysis of precursors on the surface of carbon nanotiber templates and by the oxidative removal of templates. A variety of oxide nanotubes such as thick, thin, and helical nanotubes reflecting the shapes of carbon nanofibers could be synthesized. (C) 2007 Elsevier B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/j.cattod.2007.12.012
  DOI ID：10.1016/j.cattod.2007.12.012, ISSN：0920-5861, Web of Science ID：WOS:000254516800002
• Three-dimensionally ordered macroporous (3DOM) materials of spinel-type mixed iron oxides. Synthesis, structural characterization, and formation mechanism of inverse opals with a skeleton structure　　　　　　　　　　　　　　　
  Masahiro Sadakane; Chigusa Takahashi; Nobuyasu Kato; Hitoshi Ogihara; Yoshinobu Nodasaka; Yoshihiro Doi; Yukio Hinatsu; Wataru Ueda
  BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, Volume：80, Number：4, First page：677, Last page：685, Apr. 2007, [Reviewed]
  Three-dimensionally ordered macroporous (3DOM) materials of spinel-type MFe2O4 (M = Zn, Ni, ZnxNi1-x (x = 0.2-0.8), and Co) mixed iron oxides were prepared in excellent yields by using a colloidal crystal templating method. Mixed metal nitrates were dissolved in an ethylene glycol (EG)-methanol mixed solvent and penetrated into the void of the colloidal crystal template of poly(methyl methacrylate) (PMMA) spheres. During the calcination process, the mixed metal nitrates reacted with ethylene glycol and converted into mixed metal glyoxylate derivatives in the voids of the colloidal crystals before the polymer sphere was removed. After removing the sphere template and converting the mixed metal glyoxylates into the mixed metal oxides, the well-ordered 3DOM materials of the desired spinel-type mixed metal oxides with a skeleton structure were obtained. The preparation procedure was analyzed on the basis of TGDTA, XRD, SEM, TEM, elemental analysis, and BET surface area determination, and the formation mechanism was clarified. After the PMMA templates were removed, an amorphous 3DOM material with a shell structure was obtained. Crystallization of the amorphous material to the spinel-type mixed metal oxides by further calcination changed the morphology of the 3DOM material from the shell structure to a skeleton structure.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/bcsj.80.677
  DOI ID：10.1246/bcsj.80.677, ISSN：0009-2673, eISSN：1348-0634, Web of Science ID：WOS:000246794100007
• Preparation of mixed oxide nanotubes by precursor-accumulation on carbon nanofiber templates　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Masahiro Sadakane; Yoshinobu Nodasaka; Wataru Ueda
  CHEMISTRY LETTERS, Volume：36, Number：2, First page：258, Last page：259, Feb. 2007, [Reviewed]
  Various mixed oxide nanotubes, such as perovskite-type compounds, ferrites, and silica-based mixed oxides, could be synthesized using carbon nanofibers as templates. Carbon nanofibers are effective templates for preparing mixed oxide nanotubes because they are easily coated with mixed oxide by the accumulation of precursors on their surface.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2007.258
  DOI ID：10.1246/cl.2007.258, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000245866200028
• Immobilization of nanofibrous metal oxides on microfibers: A macrostructured catalyst system functionalized with nanoscale fibrous metal oxides　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Masahiro Sadakane; Qiang Wu; Yoshinobu Nodasaka; Wataru Ueda
  CHEMICAL COMMUNICATIONS, Number：39, First page：4047, Last page：4049, 2007, [Reviewed]
  Nanofibrous LaMnO3 can be immobilized on macrostructured materials using carbon nanofibers as templates; their application as macro-nanostructured catalysts are also presented.
  ROYAL SOC CHEMISTRY, English, Scientific journal
  DOI：https://doi.org/10.1039/b708038g
  DOI ID：10.1039/b708038g, ISSN：1359-7345, Web of Science ID：WOS:000249925400029
• Shape-controlled synthesis of ZrO2, Al2O3, and SiO2 nanotubes using carbon nanofibers as templates　　　　　　　　　　　　　　　
  Hitoshi Ogihara; Masahiro Sadakane; Yoshinobu Nodasaka; Wataru Ueda
  CHEMISTRY OF MATERIALS, Volume：18, Number：21, First page：4981, Last page：4983, Oct. 2006, [Reviewed]
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/cm061266t
  DOI ID：10.1021/cm061266t, ISSN：0897-4756, Web of Science ID：WOS:000241106800001
• Three-dimensionally ordered macroporous mixed iron oxide; Preparation and structural characterization of inverse opals with skeleton structure　　　　　　　　　　　　　　　
  Masahiro Sadakane; Chigusa Takahashi; Nobuyasu Kato; Takahito Asanuma; Hitoshi Ihara; Wataru Ueda
  CHEMISTRY LETTERS, Volume：35, Number：5, First page：480, Last page：481, May 2006, [Reviewed]
  Three-dimensionally ordered macroporous (3DOM) materials of polycrystalline spinel- and perovskite-type mixed metal oxide (ZnFe2O4, NiFe2O4, and LaFeO3) could be successfully fabricated using colloidal crystal template method in excellent yield. More than 90% of the obtained materials had the 3DOM structure. The crystallites of the spinel- or perovskite-type mixed iron oxide construct struts, tetrahedral and square prism vertexes. The struts connect the tetrahedral and square prism vertexes to produce inverse opals with skeleton structure in three dimensions.
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2006.480
  DOI ID：10.1246/cl.2006.480, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000238384800005
• Formation of highly concentrated hydrogen through methane decomposition over Pd-based alloy catalysts　　　　　　　　　　　　　　　
  H Ogihara; S Takenaka; Yamanaka, I; E Tanabe; A Genseki; K Otsuka
  JOURNAL OF CATALYSIS, Volume：238, Number：2, First page：353, Last page：360, Mar. 2006, [Reviewed]
  Highly concentrated hydrogen and carbon nanofibers were produced through methane decomposition in a temperature range of 973-1123 K. Pd-based alloys containing Ni, Co, Rh, or Fe showed high catalytic activity and tong life for methane decomposition at 973 K. In particular, Pd-Co/Al2O3 and Pd-Ni/Al2O3 showed the highest hydrogen yield at reaction temperatures above 973 K among all the catalysts tested. Highly concentrated hydrogen (> 94 vol%) was formed by methane decomposition over Pd-Co/Al2O3 at 1123 K. SEM images of catalysts [M/Al2O3 (M = Fe, Co, Ni, and Pd) and Pd-M/Al2O3 (M = Fe, Co, Ni, Cu, Ag, and Rh)] after methane decomposition showed the formation of carbons with fibrous structure. In addition, TEM images of Pd-Co/Al2O3 at the initial stage of reaction showed that Pd-Co alloy particles formed carbons from several facets, whereas Co or Pd metal particles formed carbon nanofibers from one facet. This would be one reason why Pd-Co alloy catalysts showed high activity and long life for methane decomposition at high temperatures. (c) 2006 Elsevier Inc. All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/j.jcat.2005.12.024
  DOI ID：10.1016/j.jcat.2005.12.024, ISSN：0021-9517, Web of Science ID：WOS:000235625100013
• Synthesis of SiO2 nanotubes and their application as nanoscale reactors　　　　　　　　　　　　　　　
  H Ogihara; S Takenaka; Yamanaka, I; E Tanabe; A Genseki; K Otsuka
  CHEMISTRY OF MATERIALS, Volume：18, Number：4, First page：996, Last page：1000, Feb. 2006, [Reviewed]
  SiO2 nanotubes could be synthesized by hydrolysis of tetraethyl orthosilicate (TEOS) on the surface of carbon nanofibers (CNF), followed by removal of CNF. In the synthesis of SiO2 nanotubes, CNF acted as templates. The wall thickness and the internal diameter of SiO2 nanotubes were changed by hydrolysis time of TEOS and the diameter of CNF templates, respectively. The catalysts for the hydrolysis of TEOS were functional groups on the surface of CNF. The methane decomposition was carried out over SiO2, nanotubes containing, Ni metal particles, so that carbon nanotubes with uniform diameter (ca. 8 nm) were formed at the inside of SiO2 nanotubes. This result strongly indicated that SiO2 nanotubes worked as nanoscale reactors.
  AMER CHEMICAL SOC, English, Scientific journal
  DOI：https://doi.org/10.1021/cm051727v
  DOI ID：10.1021/cm051727v, ISSN：0897-4756, Web of Science ID：WOS:000235466000022
• Fabrication of single-crystalline MoO3 nanobelts by using carbons　　　　　　　　　　　　　　　
  H Ogihara; S Takenaka; Yamanaka, I; E Tanabe; A Genseki; K Otsuka
  CHEMISTRY LETTERS, Volume：34, Number：10, First page：1428, Last page：1429, Oct. 2005, [Reviewed]
  Single-crystalline MoO3 nanobelts were formed by calcination of physical mixtures of carbon nanofibers and H-3(PMo12O40) under air at 873 K. In contrast, single-crystal line MoO3 with long wire structure were formed by calcination of physical mixtures of carbon nanofibers and H-4[Si(Mo3O10)(4)].
  CHEMICAL SOC JAPAN, English, Scientific journal
  DOI：https://doi.org/10.1246/cl.2005.1428
  DOI ID：10.1246/cl.2005.1428, ISSN：0366-7022, eISSN：1348-0715, Web of Science ID：WOS:000232745400061
• Reduction of NO with the carbon nanofibers formed by methane decomposition　　　　　　　　　　　　　　　
  H Ogihara; S Takenaka; Yamanaka, I; K Otsuka
  CARBON, Volume：42, Number：8-9, First page：1609, Last page：1617, 2004, [Reviewed]
  Reduction of NO with the carbon nanofibers (CNF) formed by methane decomposition over various Ni-M/SiO2, where M is a different metal added, has been investigated. The CNF formed on Ni-Cu/SiO2 catalyst was most favorable for enhancing the reduction of NO. The metal species (Ni, Co, Pt, Pd or Cu) contained in CNF did not catalyze the reaction between NO and CNF in the presence of oxygen. The reducing ability of CNF for NO depended strongly on the specific surface area and the degree of graphitization of CNF. (C) 2004 Elsevier Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/j.carbon.2004.03.001
  DOI ID：10.1016/j.carbon.2004.03.001, ISSN：0008-6223, Web of Science ID：WOS:000221948000024
• Ni/SiO2 catalyst effective for methane decomposition into hydrogen and carbon nanofiber　　　　　　　　　　　　　　　
  S Takenaka; S Kobayashi; H Ogihara; K Otsuka
  JOURNAL OF CATALYSIS, Volume：217, Number：1, First page：79, Last page：87, Jul. 2003, [Reviewed]
  Methane decomposition into hydrogen and carbon nanofibers was carried out over Ni/SiO2. The catalytic activity of Ni/SiO2 decreased with time on stream and finally the catalyst was deactivated completely. The initial catalytic activity and the yields of hydrogen and carbon nanofibers until complete deactivation of the catalysts depended strongly on the loading amount of Ni. The yield of carbon nanofibers reached the maximum (491 g(C)/g(Ni)) for Ni (40 wt%)/SiO2, which is one of the highest values among those for catalysts reported so far. SEM images of the catalysts after methane decomposition suggested that the particle size of Ni metal controlled the yields of hydrogen and carbon nanofibers. The yields of hydrogen and carbon nanofibers also depended significantly on the reaction temperatures; i.e., the yields decreased sharply with a rise in the reaction temperatures at > 773 K. In addition, the reaction temperatures controlled the diameter and graphitic order of carbon nanofibers. (C) 2003 Elsevier Science (USA). All rights reserved.
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1016/S0021-9517(02)00185-9
  DOI ID：10.1016/S0021-9517(02)00185-9, ISSN：0021-9517, Web of Science ID：WOS:000183224200009
• Decomposition of methane over Ni catalysts supported on carbon fibers formed from different hydrocarbons　　　　　　　　　　　　　　　
  K Otsuka; H Ogihara; S Takenaka
  CARBON, Volume：41, Number：2, First page：223, Last page：233, 2003, [Reviewed]
  In order to get pure hydrogen without CO and CO2, the decomposition of methane into hydrogen and carbon fibers (CF) over Ni/carbon catalysts has been investigated. The reason for the use of carbon materials as supports is to avoid a costly elimination treatment of the catalyst from the formed CF. The Ni/carbon catalysts prepared by the impregnation of various carbon materials with Ni(NO3)(2) dissolved in acetone, followed by reduction in hydrogen at 573 K, showed better catalytic performance in the decomposition of methane than those prepared by the impregnation with aqueous Ni(NO3)(2). The Ni(40 wt%)/CF(from 1-C4H8) showed the highest catalytic performance giving a C/Ni value (moles of deposited carbon per mole of Ni on the catalyst) of 1920 until complete deactivation of the catalyst. SEM and TEM images of the CF formed from methane indicated their thickness to be approximate to10-150 nm with the same size of Ni particles at their tips at the early stage of the decomposition of methane, but the thickness changed to approximate to40-100 nm at the final stage of decomposition. An estimate of the average size of Ni crystallites from XRD measurement suggested that the carbons deposited from methane on various Ni/CF would modify the size of Ni crystallites during the reaction. It is suggested that 20 nm Ni crystallites are most active for the growth of carbon nanofibers. (C) 2002 Elsevier Science Ltd. All rights reserved.
  PERGAMON-ELSEVIER SCIENCE LTD, English, Scientific journal
  DOI：https://doi.org/10.1016/S0008-6223(02)00308-1
  DOI ID：10.1016/S0008-6223(02)00308-1, ISSN：0008-6223, Web of Science ID：WOS:000180423200003
• 10.1016/S0021-9517(02)00185-9　　　　　　　　　　　　　　　
  S. Takenaka; S. Kobayashi; H. Ogihara; K. Otsuka
  J. Catal., Volume：217, First page：79, Last page：87, 2003, [Reviewed]
  Scientific journal
  DOI：https://doi.org/10.1016/S0021-9517(02)00185-9
  DOI ID：10.1016/S0021-9517(02)00185-9
• Structural change of Ni species in Ni/SiO2 catalyst during decomposition of methane　　　　　　　　　　　　　　　
  S Takenaka; H Ogihara; K Otsuka
  JOURNAL OF CATALYSIS, Volume：208, Number：1, First page：54, Last page：63, May 2002, [Reviewed]
  The structural change of Ni species in a Ni/SiO2 catalyst during methane decomposition into hydrogen and carbon was investigated by X-ray diffraction (XRD), scanning electron microscopy, and Ni K-edge X-ray absorption near-edge spectroscopy/extended X-ray absorption fine structure (XANES/EXAFS). The Ni/SiO2 catalyst decomposed methane actively into hydrogen and filamentous carbon at initial periods of the reaction. The catalytic activity for the reaction decreased with time on stream of methane and finally the catalyst was deactivated completely. Prior to the contact of methane with the Ni/SiO2 catalyst, Ni species on the catalyst were present as Ni metal mainly. XRD analyses showed that Ni metal particles were aggregated as soon as the Ni/SiO2 came into contact with methane. After this initial aggregation, the structure of the Ni metal did not change appreciably when the Ni/SiO2 was decomposing methane actively. Ni K-edge XANES/EXAFS suggested the formation of some nickel carbide species on the catalyst when significant deactivation of the catalyst was observed. (C) 2002 Elsevier Science (USA).
  ACADEMIC PRESS INC ELSEVIER SCIENCE, English, Scientific journal
  DOI：https://doi.org/10.1006/jcat.2002.3523
  DOI ID：10.1006/jcat.2002.3523, ISSN：0021-9517, Web of Science ID：WOS:000175639900007
• Decomposition of methane over supported-Ni catalysts: effects of the supports on the catalytic lifetime　　　　　　　　　　　　　　　
  S Takenaka; H Ogihara; Yamanaka, I; K Otsuka
  APPLIED CATALYSIS A-GENERAL, Volume：217, Number：1-2, First page：101, Last page：110, Sep. 2001, [Reviewed]
  Decomposition of methane into carbon and hydrogen over Ni catalysts supported on different supports was studied. The catalytic activities and the lifetimes of the catalysts for the reaction were examined and are discussed. Ni catalysts supported on SiO2, TiO2 and graphite showed high activities and long lifetimes for the reaction, whereas the catalysts supported on Al2O3, MgO and SiO2-MgO were inactive for the reaction. The relation between the catalytic performance of the supported-Ni catalysts and the structure or electronic state of Ni species is discussed on the bases of the results of X-ray diffraction (XRD) and Ni K-edge XANES/EXAFS. In the supported-Ni catalysts effective for the methane decomposition, Ni species were present as crystallized Ni metal particles. On the other hand, the Ni species on the inactive catalysts were present as nickel oxides mainly, suggesting the formation of a compound oxide between Ni and the supports.
  The catalytic performance of the Ni catalysts supported on silicas with different specific surface areas and pore structures indicated that the catalytic activity and lifetime for the methane decomposition depended significantly on the pore structures of the supports. The silica support with no pore structure was the most favorable one for enhancing the catalytic activity and lifetime of the supported-Ni catalysts. (C) 2001 Elsevier Science B.V. All rights reserved.
  ELSEVIER SCIENCE BV, English, Scientific journal
  DOI：https://doi.org/10.1016/S0926-860X(01)00593-2
  DOI ID：10.1016/S0926-860X(01)00593-2, ISSN：0926-860X, Web of Science ID：WOS:000170756000010
• Characterization of silica-supported Ni catalysts effective for methane decomposition by Ni K-edge XAFS　　　　　　　　　　　　　　　
  S Takenaka; H Ogihara; Yamanaka, I; K Otsuka
  JOURNAL OF SYNCHROTRON RADIATION, Volume：8, First page：587, Last page：589, Mar. 2001, [Reviewed]
  The structural change of Ni species during the methane decomposition into hydrogen and carbon over Ni/SiO2 catalyst was investigated by Ni K-edge XANES/EXAFS. Before the contact of methane with the Ni/SiO2 catalyst, Ni species were present as Ni metal mainly. The structure of the Ni metal did not change appreciably when the Ni/SiO2 was actively decomposing methane. In contrast, the formation of nickel carbide species was observed at the deactivation stage of the catalyst.
  MUNKSGAARD INT PUBL LTD, English, Scientific journal
  DOI：https://doi.org/10.1107/S0909049500015879
  DOI ID：10.1107/S0909049500015879, ISSN：0909-0495, Web of Science ID：WOS:000167298100165

• 高温反応条件下でのXAFSー反応解析の可能性　　　　　　　　　　　　　　　
  KASHABOINA Upendar; 鮑徳玲; 城戸大貴; 三輪(有賀)寛子; 高草木達; 脇坂祐輝; 西川祐太; 井波雄太; 栗山史也; ARNOLDUSLAMBERTUS Dipu; 荻原仁志; 井口翔之; 山中一郎; 和田敬広; 朝倉清高
  Volume：126th, 2020
  ISSN：2758-3503, J-Global ID：202102222954107414
• SPE型CO2電解に活性を示すCo-N-C触媒の構造解析と反応機構の推定　　　　　　　　　　　　　　　
  仙波雄毅; 荻島裕司; 井波雄太; 井口翔之; 荻原仁志; 山中一郎
  2020
• In脱水素メタンカップリング触媒の高温オペランドXAFS観察　　　　　　　　　　　　　　　
  KASHABOINA Upendar; 鮑徳玲; 城戸大貴; 三輪(有賀)寛子; 高草木達; 西川祐太; 井波雄太; 栗山史也; DIPU Arnoldus Lambertus; 荻原仁志; 井口翔之; 山中一郎; 和田敬広; 朝倉清高
  2020
• メタン脱水素多量化反応におけるインジウム金属液体の触媒作用　　　　　　　　　　　　　　　
  山中一郎; 荻原仁志; 西川祐太
  2017
• トルエン電解水素化反応におけるRu-Ir/KBカソードのRu-Ir協奏効果　　　　　　　　　　　　　　　
  井波雄太; 荻原仁志; 山中一郎
  2017
• 触媒化学的なメタン直接転換反応の現状　　　　　　　　　　　　　　　
  荻原仁志
  2016
• Co-N-C電極触媒上でのCO2選択還元によるCO生成反応　　　　　　　　　　　　　　　
  荻原仁志; 前鶴知美; 荻島裕司; 山中一郎]
  2016
• Au NPs/C アノード-Pd（NHC）触媒による炭酸ジフェニル合成　　　　　　　　　　　　　　　
  兼賀量一; 荻原仁志; 山中一郎
  2015
• Superhydrophobic coatings prepared by spraying hydrophobic nanoparticles　　　　　　　　　　　　　　　
  Hitoshi Ogihara
  Journal of the Vacuum Society of Japan, Volume：58, Number：11, First page：431, Last page：435, 2015
  This short review summarizes a preparation method for superhydrophobic surface by spray-coating technique. Superhydrophobic coatings can be prepared on a variety of substrate such as paper, metal, and cotton by spraying nanoparticle suspensions. As nanoparticles, hydrophobic silica nanoparticles, nano-pigments, and carbon nanotubes are applicable. In order to provide superhydrophobicity for the nanoparticle coatings, several factors (i.e., size of nanoparticles, surface energy of nanoparticles, types of solvent, and the amount of the coatings) played crucial roles. The spray-coating technique is a simple, safe and low-cost method to form superhydrophobic surface.
  Vacuum Society of Japan, Japanese
  DOI：https://doi.org/10.3131/jvsj2.58.431
  DOI ID：10.3131/jvsj2.58.431, ISSN：1882-2398, CiNii Articles ID：130005111171, SCOPUS ID：84982091371
• ナノ粒子噴霧法による固体表面の超撥水化　　　　　　　　　　　　　　　
  荻原 仁志
  Volume：36, Number：2, First page：142, Last page：146, 01 Feb. 2013
  Japanese
  ISSN：0386-2763, CiNii Articles ID：10031166873, CiNii Books ID：AN00223523
• Preparation of Superhydrophobic Nanoparticle Films by Using Spray-coating Technique　　　　　　　　　　　　　　　
  荻原 仁志
  塗装工学, Volume：48, Number：5, First page：166, Last page：171, 2013
  日本塗装技術協会, Japanese
  ISSN：0285-3787, CiNii Articles ID：40019691339, CiNii Books ID：AN00329987
• 化学レビュー(38)界面化学 超撥水表面の設計と高機能化 : さらなる付加価値の向上を目指して　　　　　　　　　　　　　　　
  荻原 仁志; 佐治 哲夫
  Volume：67, Number：8, First page：40, Last page：43, Aug. 2012
  Japanese
  ISSN：0451-1964, CiNii Articles ID：40019387014, CiNii Books ID：AN0003680X
• 電気泳動法を用いた超撥水カラー薄膜の作製　　　　　　　　　　　　　　　
  荻原仁志
  Volume：44, Number：5, First page：185, Last page：189, 2009
  Japanese
  ISSN：0285-3787, CiNii Articles ID：40016678232, CiNii Books ID：AN00329987
• 古くて新しいめっき技術　　　　　　　　　　　　　　　
  荻原 仁志
  Volume：50, Number：4, First page：379, Last page：380, 10 Jun. 2008
  Japanese
  ISSN：0559-8958, CiNii Articles ID：10021070476, CiNii Books ID：AN00117719
• Immobilization Method of Carbon Nanotubes and Carbon Nanofibers　　　　　　　　　　　　　　　
  OGIHARA HITOSHI
  触媒 = Catalysts & Catalysis, Volume：49, Number：5, First page：369, Last page：369, 10 Aug. 2007
  Japanese
  ISSN：0559-8958, CiNii Articles ID：10019746312, CiNii Books ID：AN00117719
• Space control of mixed metal oxide using organic templates　　　　　　　　　　　　　　　
  定金 正洋; 荻原 仁志; 上田 渉
  化学工業, Volume：58, Number：7, First page：503, Last page：511, Jul. 2007
  化学工業社, Japanese
  ISSN：0451-2014, CiNii Articles ID：40015526635, CiNii Books ID：AN00037245
• Development of nano/microstructured catalysts through the template method　　　　　　　　　　　　　　　
  OGIHARA Hitoshi; SADAKANE Masahiro; UEDA Wataru
  触媒 = Catalysts & Catalysis, Volume：49, Number：2, First page：141, Last page：143, 10 Mar. 2007
  触媒学会, Japanese
  ISSN：0559-8958, CiNii Articles ID：10018571343, CiNii Books ID：AN00117719
• 有機構造体テンプレートを用いた複合金属酸化物の空間制御　　　　　　　　　　　　　　　
  定金正洋; 荻原仁志; 上田 渉
  Volume：58, Number：7, First page：15, Last page：23, 2007
• カーボンナノチューブ/ナノファイバーの固定化技術　　　　　　　　　　　　　　　
  荻原仁志
  Volume：49, Number：5, First page：369, 2007
• シリカナノチューブ合成とチューブ中へのカーボンナノチューブ充項　　　　　　　　　　　　　　　
  大塚 潔; 荻原 仁志
  Volume：5, Number：4, First page：113, Last page：118, Jul. 2005
  Japanese
  ISSN：1346-3926, CiNii Articles ID：40006844388
• シリカナノチューブ合成とそれを反応器としたカーボンナノチューブ合成　　　　　　　　　　　　　　　
  荻原 仁志; 竹中 壮; 山中 一郎; 大塚 潔
  Volume：47, Number：2, First page：110, Last page：112, 01 Mar. 2005
  Japanese
  ISSN：0559-8958, CiNii Articles ID：10015432857, CiNii Books ID：AN00117719
• シリカナノチューブ合成とチューブ内へのカーボンナノチューブ充填　　　　　　　　　　　　　　　
  大塚 潔; 荻原仁志
  Volume：5, First page：113, Last page：118, 2005
• カーボンナノファイバー合成用カーボン担持Ni触媒の開発　　　　　　　　　　　　　　　
  大塚 潔; 荻原 仁志; 竹中 壮; 山中 一郎
  Volume：44, Number：2, First page：137, Last page：139, 10 Mar. 2002
  Japanese
  ISSN：0559-8958, CiNii Articles ID：10007770166, CiNii Books ID：AN00117719
• 担持ニッケル触媒上でのメタン直接分解による水素合成:ニッケル種の状態と構造変化　　　　　　　　　　　　　　　
  竹中 壮; 荻原 仁志; 小林 正治; 山中 一郎; 大塚 潔
  Volume：43, Number：2, First page：113, Last page：115, 10 Mar. 2001
  Japanese
  ISSN：0559-8958, CiNii Articles ID：10007172090, CiNii Books ID：AN00117719

• 複合酸化物ナノチューブの合成と応用　　　　　　　　　　　　　　　
  2008

• メタンドライリフォーミング反応におけるNi/SiO₂触媒への第2金属の添加効果　　　　　　　　　　　　　　　
  渡島大聖; 荻原仁志; 黒川秀樹
  Nov. 2024
  Poster presentation
• 担持Fe-K-Cu系触媒を用いたCO₂の常圧水素化反応によるオレフィン類合成　　　　　　　　　　　　　　　
  横山純大; 納見涼平; 荻原仁志; 黒川秀樹
  Nov. 2024
  Poster presentation
• 1,3-プロパンジオールの電解酸化による3-ヒドロキシプロピオン酸の合成　　　　　　　　　　　　　　　
  角田冴遥; 黒川秀樹; 荻原仁志
  Nov. 2024
  Oral presentation
• Crモンモリロナイト/ジルコノセン/ビス(イミノ)ピリジン鉄錯体からなる3元系hybridエチレン重合触媒の開発　　　　　　　　　　　　　　　
  大月康平; 山本和弘; 福田哲朗; 荻原仁志; 黒川秀樹
  Nov. 2024
  Oral presentation
• 水を水素源とするアミドの電気化学的な水素化脱酸素によるアミンの合成　　　　　　　　　　　　　　　
  笠原太一; 黒川秀樹; 荻原仁志
  Oct. 2024
  Poster presentation
• 膜/電極接合体を用いたブタノール電解酸化によるブタン酸の合成　　　　　　　　　　　　　　　
  城戸裕太郎; 八木航平; 黒川秀樹; 荻原仁志
  Sep. 2024
  Oral presentation
• Ni/C触媒を用いたエタノール電解酸化による酢酸合成　　　　　　　　　　　　　　　
  笹沼颯太; 黒川秀樹; 荻原仁志
  Sep. 2024
  Oral presentation
• 化学産業の電化を実現する「電解反応プロセス」の最新動向　　　　　　　　　　　　　　　
  荻原仁志
  Jul. 2024, [Invited]
  Nominated symposium
• Partial Oxidation of Alcohols via Electrochemical Processes　　　　　　　　　　　　　　　
  H. Ogihara; R. Kishi; D. Kawaguchi; S. Abdelnasser; N. Kuramochi; H. Matsushita,T.; Hakamata; Y. Kido; M. Yoshida-Hirahara; H. Kurokawa
  18th ICC - INTERNATIONAL CONGRESS ON CATALYSIS, Jul. 2024
  Poster presentation
• 電気化学的なアルコール部分酸化反応　　　　　　　　　　　　　　　
  荻原仁志,黒川秀樹
  Jan. 2024, [Domestic conference]
• アルコール類をアップグレーディングする電解酸化プロセス　　　　　　　　　　　　　　　
  荻原仁志
  Nov. 2023, [Domestic conference]
• 酸化物ナノ粒子触媒を用いた直鎖アルコールの電解酸化　　　　　　　　　　　　　　　
  福田亮子,荻原仁志,黒川秀樹
  Oct. 2023, [Domestic conference]
• CO2水素化によるオレフィン類製造のためのMgAl2O4担持 Fe系触媒の開発　　　　　　　　　　　　　　　
  小室美鈴,荻原仁志,黒川秀樹
  Oct. 2023, [Domestic conference]
• M-Co-N-C触媒による気相CO2の電気化学的還元　　　　　　　　　　　　　　　
  河合聖伊人,倉持那奈子,山中一郎,黒川秀樹,荻原仁志
  Sep. 2023, [Domestic conference]
• 低級アルコールの電気化学的転換における電解発生酸の影響　　　　　　　　　　　　　　　
  笠原太一,川口大輔,黒川秀樹,荻原仁志
  Sep. 2023, [Domestic conference]
• 脱水素的な分子転換のための電極触媒場の設計　　　　　　　　　　　　　　　
  荻原仁志
  Sep. 2023, [Domestic conference]
• Al2O3担持Rh触媒を用いた低温メタンドライリフォーミング反応　　　　　　　　　　　　　　　
  土田竜平,黒川秀樹,荻原仁志
  Sep. 2023, [Domestic conference]
• メソポーラスアルミナ担持PtCu触媒によるn-ブタン脱水素反応　　　　　　　　　　　　　　　
  大嶋 祐輝,平原 実留,荻原 仁志,黒川 秀樹
  May 2023, [Domestic conference]
• 担持Ni系触媒を用いたブテン類の液相オリゴメリゼーションー効率的なバイオジェット燃料基油の合成ー　　　　　　　　　　　　　　　
  五利江優佑,平原実留,荻原仁志,黒川秀樹
  May 2023, [Domestic conference]
• VOx/HZSM-5触媒を用いたメタンの芳香族化とカップリング反応　　　　　　　　　　　　　　　
  渡島大聖,丁ヒョヌ,平原実留,荻原仁志,黒川秀樹
  May 2023, [Domestic conference]
• モンモリロナイト担持4族メタロセン／後周期遷移金属錯体からなるhybridエチレン重合触媒の開発　　　　　　　　　　　　　　　
  田中 祐輔,山本 和弘,平原 実留,荻原 仁志,黒川 秀樹
  Oct. 2022, [Domestic conference]
• ニッケル錯体/EtAlCl₂からなる不均一系触媒を用いたブテン低重合によるバイオジェット燃料の製造　　　　　　　　　　　　　　　
  神坂 樹,春田 真吾,平原 実留,荻原 仁志,黒川 秀樹
  Oct. 2022, [Domestic conference]
• 担持Pt触媒を用いたメタン脱水素カップリング反応　　　　　　　　　　　　　　　
  荻原 仁志,友野 樹,髙村 陸,黒川 秀樹
  Oct. 2022, [Domestic conference]
• 担持鉄系触媒によるCO2の気相水素化反応　　　　　　　　　　　　　　　
  小室 美鈴,平原 実留,荻原 仁志,黒川 秀樹
  Oct. 2022, [Domestic conference]
• 環状C5成分の脱水素反応によるシクロペンタジエン製造のための担持Pt系触媒の開発　　　　　　　　　　　　　　　
  浮田 龍一,平原 実留,荻原 仁志,黒川 秀樹
  Oct. 2022, [Domestic conference]
• PEM 型電解ユニットを用いた低級アルコールのアップグレーディング　　　　　　　　　　　　　　　
  荻原 仁志,岸 怜児,川口 大輔,袴田 拓,倉持 那奈子,黒川 秀樹
  Oct. 2022, [Domestic conference]
• 膜-電極接合体を用いた2級アルコールの電解脱水素反応によるケトン類の合成　　　　　　　　　　　　　　　
  袴田 拓海,平原 実留,荻原 仁志,黒川 秀樹
  Sep. 2022, [Domestic conference]
• Pt/Al2O3触媒を用いたメタン脱水素多量化反応における水素添加効果　　　　　　　　　　　　　　　
  友野 樹,髙村 陸,平原 実留,荻原 仁志,黒川 秀樹
  Sep. 2022, [Domestic conference]
• 膜-電極接合体を用いたメタノール電解酸化によるホルムアルデヒド合成　　　　　　　　　　　　　　　
  倉持那奈子,平原実留,荻原仁志,黒川秀樹
  Sep. 2022, [Domestic conference]
• PEFC用電解質膜におけるプロトン伝導性ネットワークのCryo-STEM直接観察　　　　　　　　　　　　　　　
  平原 実留,杉森 秀一,荻原 仁志,陸川 政弘
  Sep. 2022, [Domestic conference]
• Catalytic conversion of methanol to methyl formate via proton-exchange membrane electrolysis　　　　　　　　　　　　　　　
  Hitoshi OGIHARA, Ryoji KISHI, Nanako KURAMOCHI, Miru YOSHIDA-HIRAHARA, Ichiro YAMANAKA, Hideki KUROKAWA,
  Jul. 2022, [International conference]
• n-Pentane dehydrogenation over supported Pt catalysts -Effects of co-fed gas-"　　　　　　　　　　　　　　　
  Misuzu KOMURO, Takayuki URAKAWA, Honoka ANEZAKI, Miru HIRAHARA, Hitoshi OGIHARA, Hideki KUROKAWA
  Jul. 2022, [International conference]
• Pt-Cu bimetallic catalysts supported on alumina with worm-like-structured mesopore for n-butane dehydrogenation　　　　　　　　　　　　　　　
  Yuki OSHIMA, Seiji KUCHIKI, Miru HIRAHARA, Hitoshi OGIHARA, Hideki KUROKAWA
  Jul. 2022, [International conference]
• Electroconversion of lower alcohols into value-added chemicals　　　　　　　　　　　　　　　
  Takumi HAKAMATA, Daisuke KAWAGUCHI, Shady ABDELNASSER, Miru YOSHIDA-HIRAHARA, Hitoshi OGIHARA, Hideki KUROKAWA
  Jul. 2022, [International conference]
• モンモリロナイト担持ジルコノセン錯体／ビス（イミノ）ピリジン鉄錯体からなるhybrid触媒によるエチレン重合　　　　　　　　　　　　　　　
  田中祐輔,成田勇揮,山本和弘,平原実留,荻原仁志,黒川秀樹
  May 2022, [Domestic conference]
• ビス（イミノ）ピリジン鉄錯体／MMAO系触媒を用いたブテン低重合によるバイオジェット燃料の製造　　　　　　　　　　　　　　　
  神坂 樹,春田真吾,平原実留,荻原仁志,黒川秀樹
  May 2022, [Domestic conference]
• ペロブスカイトナノ粒子触媒によるグリセロール電解酸化　　　　　　　　　　　　　　　
  福田亮子,矢口美寿里,平原実留,荻原仁志,黒川秀樹
  May 2022, [Domestic conference]
• アルコールを高付加価値物質と水素に 転換する電解プロセスの開拓　　　　　　　　　　　　　　　
  荻原仁志
  Mar. 2022, [Domestic conference]
• ナノカーボンへの前駆体集積を利用した ペロブスカイトナノ粒子の合成と触媒利用　　　　　　　　　　　　　　　
  荻原仁志
  Dec. 2021, [Domestic conference]
• 異種ポリエチレンブレンドをone-pot合成可能な層状粘土鉱物担持hybrid触媒の開発　　　　　　　　　　　　　　　
  成田勇揮、田中祐輔、平原実留、荻原仁志、黒川秀樹
  Nov. 2021, [Domestic conference]
• 脱水素的な分子転換プロセスの開発 –アルコール電解からメタン多量化まで–　　　　　　　　　　　　　　　
  荻原仁志
  Nov. 2021, [Domestic conference]
• ナノカーボン上に形成したNi-Fe系酸化物の酸素発生反応活性　　　　　　　　　　　　　　　
  矢口美寿里,平原実留,荻原仁志,黒川秀樹
  Sep. 2021, [Domestic conference]
• 電解脱水素法によるアルコールの転換　　　　　　　　　　　　　　　
  川口大輔,平原実留,荻原仁志,黒川秀樹
  Sep. 2021, [Domestic conference]
• 担持VOx触媒を用いたメタン脱水素多量化反応　　　　　　　　　　　　　　　
  丁ヒョヌ,平原実留,荻原仁志,黒川秀樹
  Sep. 2021, [Domestic conference]
• 膜-電極接合体を用いた芳香族アルコールの電解選択酸化　　　　　　　　　　　　　　　
  松下響,アブデルナサーシャディ,平原実留,荻原仁志,黒川秀樹
  Sep. 2021, [Domestic conference]
• 脱水素反応を基軸とする小分子のアップグレーディング 〜アルコール電解とメタン転換を例に〜　　　　　　　　　　　　　　　
  荻原仁志
  Aug. 2021, [Domestic conference]
• PtSn/MgAl2O4 触媒によるスチーム共存下でのイソペンタン脱水素反応　　　　　　　　　　　　　　　
  関 艶陽, 浮田龍一, 平原実留, 荻原仁志, 黒川 秀樹
  May 2021, [Domestic conference]
• イソペンタン脱水素によるイソプレン製造のためのPtSn/MgAl2O4触媒への塩基性酸化物の添加効果　　　　　　　　　　　　　　　
  浮田龍一、関艶陽、荻原仁志、黒川秀樹
  May 2021, [Domestic conference]
• ジイソブチレン環化脱水素反応によるパラキシレン製造のための担持Pt系触媒の開発―Pt粒径の効果―　　　　　　　　　　　　　　　
  大澤南斗、宮原稔武、平原実留、荻原仁志、黒川秀樹
  May 2021, [Domestic conference]
• メソ細孔を有するAl2O3に担持したPtCu触媒によるn-ブタン脱水素反応　　　　　　　　　　　　　　　
  大嶋祐輝、朽木晴治、平原実留、荻原仁志、黒川秀樹
  May 2021, [Domestic conference]
• プロトン交換膜を利用したアルコールの電解酸化　　　　　　　　　　　　　　　
  袴田拓海,川口大輔,岸怜児,平原実留,荻原仁志,黒川秀樹
  May 2021, [Domestic conference]
• 酸化ニッケルのOER活性に対する鉄処理の影響　　　　　　　　　　　　　　　
  靳子涵,平原実留,荻原仁志,黒川秀樹
  May 2021, [Domestic conference]
• 電解脱水素法によるメタノールの部分酸化　　　　　　　　　　　　　　　
  倉持那奈子,岸怜児,平原実留,荻原仁志,黒川秀樹
  May 2021, [Domestic conference]
• 担持Pt触媒を用いたメタン脱水素による有用化合物の合成　　　　　　　　　　　　　　　
  友野樹,髙村陸,平原実留,荻原仁志,黒川秀樹
  May 2021, [Domestic conference]
• 電極触媒反応におけるNafionの添加効果　　　　　　　　　　　　　　　
  八木航平,島朋助,平原実留,荻原仁志,黒川秀樹
  May 2021, [Domestic conference]
• 異種ポリエチレンブレンドをone-pot合成可能なフッ素四ケイ素雲母層間共固定化Fe(III)-Ni(II)錯体系hybrid触媒の開発　　　　　　　　　　　　　　　
  成田 勇輝、山本 和弘、平原 実留、荻原 仁志、黒川 秀樹
  Nov. 2020, [Domestic conference]
• フッ素四ケイ素雲母層間固定化イミノピリジンNi(Ⅱ)錯体触媒によるエチレンオリゴメリゼーション – 分岐オレフィン類生成に対する置換基効果 –　　　　　　　　　　　　　　　
  春田 真吾、田中 愛理、山本 和弘、平原 実留、荻原 仁志、黒川 秀樹
  Nov. 2020, [Domestic conference]
• 前駆体集積法によるペロブスカイト型酸化物ナノ粒子の汎用的合成法の開発　　　　　　　　　　　　　　　
  矢口美寿里・樋口まい・平原実留・荻原仁志・黒川秀樹
  Sep. 2020, [Domestic conference]
• プロトン交換膜(PEM)を用いたエタノールの電解部分酸化　　　　　　　　　　　　　　　
  川口大輔,荻原仁志,黒川秀樹
  Sep. 2020, [Domestic conference]
• 高温反応条件下でのXAFS―反応解析の可能性　　　　　　　　　　　　　　　
  KASHABOINA, Upendar・鮑徳 玲・城戸大貴・三輪(有賀)寛 子・高草木達・脇坂祐輝・ 西川祐太・井波雄太・栗山史 也・ARNOLDUS LAMBERTUS, Dipu・荻原仁志・井口翔之・ 山中一郎・和田敬広・朝倉 清高*
  Sep. 2020, [Domestic conference]
• 担持Pt触媒を用いたメタン脱水素反応による低級炭化水素および芳香族化合物の合成　　　　　　　　　　　　　　　
  髙村陸,平原実留,荻原仁志,黒川秀樹
  Sep. 2020, [Domestic conference]
• メタノールの電解酸化によるギ酸メチルの合成　　　　　　　　　　　　　　　
  岸怜児,荻原仁志,柴沼知哉,山中一郎,黒川秀樹
  Sep. 2019, [Domestic conference]
• Pt/Cを用いた水素発生反応におけるNafion添加量の影響　　　　　　　　　　　　　　　
  島朋助,荻原仁志,黒川秀樹
  Sep. 2019, [Domestic conference]
• 液相における前駆体集積法を用いたペロブスカイト型酸化物新規合成法の開発　　　　　　　　　　　　　　　
  樋口まい,矢口美寿里,荻原仁志
  Sep. 2019, [Domestic conference]
• 前駆体集積法を用いたLaCoO3ナノ粒子の合成と酸素発生反応への応用　　　　　　　　　　　　　　　
  酒巻葵,荻原仁志,黒川秀樹
  Sep. 2019, [Domestic conference]
• メタン分解で析出するカーボンナノファイバー水素化による炭化水素類の合成　　　　　　　　　　　　　　　
  髙村陸,今井菜通子,荻原仁志,黒川秀樹
  Jul. 2019, [Domestic conference]
• エタン脱水素反応におけるメタン共存効果　　　　　　　　　　　　　　　
  田島寬輝,荻原仁志,黒川秀樹
  Jul. 2019, [Domestic conference]
• セリアージルコニア複合酸化物担持Pt-Sn触媒によるn-ブタンの脱水素反応　　　　　　　　　　　　　　　
  小島拓実,朽木晴治,平原実留,荻原仁志,黒川秀樹
  Jun. 2019, [Domestic conference]
• 酸化物集積プロセスによって合成したペロブスカイト型酸化物の酸素発生反応への応用　　　　　　　　　　　　　　　
  酒巻葵,平原実留,荻原仁志,黒川秀樹
  Jun. 2019, [Domestic conference]
• 芳香族硫黄化合物の酸化的脱硫反応によるディーゼル燃料の高品質化　　　　　　　　　　　　　　　
  Vereshchagin KONSTANTIN,山川哲矢,荻原仁志,黒川秀樹, 関口 和彦
  Jun. 2019, [Domestic conference]
• 液相での酸化物コーティング技術を利用したペロブスカイト型酸化物の新規合成法の開発　　　　　　　　　　　　　　　
  樋口まい,平原実留,荻原仁志,黒川秀樹
  May 2019, [Domestic conference]
• 液相での酸化物集積プロセスによるペロブスカイト型酸化物ナノ粒子の合成と触媒への応用　　　　　　　　　　　　　　　
  酒巻 葵,平原実留,荻原仁志,黒川秀樹
  May 2019, [Domestic conference]
• n-ブタン脱水素反応によるブテン類製造のための塩素フリーPtSn/MgAl2O4触媒へのCeO2の添加効果　　　　　　　　　　　　　　　
  姉崎ほのか,髙山柚季,平原実留,荻原仁志,黒川秀樹
  May 2019, [Domestic conference]
• 水素発生反応に高活性な低担持量Pt/C電極触媒の開発　　　　　　　　　　　　　　　
  島 朋助,平原実留,荻原仁志,黒川秀樹
  May 2019, [Domestic conference]
• 酸処理モンモリロナイト担持rac-Me2Si(Ind)2ZrCl2錯体触媒におけるエチレン／1-オクテン共重合　　　　　　　　　　　　　　　
  長谷川直紀,渡辺健太,平原実留,荻原仁志,黒川秀樹
  May 2019, [Domestic conference]
• メタン分解で副生する炭素を経由した炭化水素類の合成　　　　　　　　　　　　　　　
  髙村陸,今井菜通子,平原実留,荻原仁志,黒川秀樹
  May 2019, [Domestic conference]
• n-ブタンからブテン類を高選択的に製造可能なシンタリング耐性を有するZrO2-CeO2担持PtSn触媒の開発　　　　　　　　　　　　　　　
  小島拓実,朽木晴治,平原実留,荻原仁志,黒川秀樹
  May 2019, [Domestic conference]
• Modification of Cu-Pt/Al2O3 with 3rd Component to Improve Selectivity in n-Butane Dehydrogenation　　　　　　　　　　　　　　　
  Seiji KUCHIKI, Miru HIRAHARA, Hitoshi OGIHARA, Hideki KUROKAWA
  May 2019, [International conference]
• 担持Pd触媒を用いたメタン脱水素反応における水素と低級炭化水素の合成　　　　　　　　　　　　　　　
  今井菜通子,荻原仁志,黒川秀樹
  Mar. 2019, [Domestic conference]
• インジウム金属液体によるメタンの脱水素多量化反応に関する理論的研究　　　　　　　　　　　　　　　
  大塚勇起,中山哲,長谷川淳也,西川祐太,荻原仁志,山中一郎
  Sep. 2018, [Domestic conference]
• メタン分解による水素と低級炭化水素の合成　　　　　　　　　　　　　　　
  今井菜通子,荻原仁志,黒川秀樹
  Sep. 2018, [Domestic conference]
• スチーム存在下でのn-ブタン脱水素反応のためのPt/Al2O3触媒へのCuの添加効果　　　　　　　　　　　　　　　
  朽木晴治,平原実留,荻原仁志,黒川秀樹
  Sep. 2018, [Domestic conference]
• 液体インジウムによるメタンの脱水素多量化反応に関する理論的研究　　　　　　　　　　　　　　　
  大塚勇起、中山哲、西川祐太、荻原 仁志、山中一郎、長谷川淳也
  Sep. 2018, [Domestic conference]
• イリジウム電極触媒によるシクロヘキサンの部分酸化反応　　　　　　　　　　　　　　　
  片岡賢志
  Sep. 2018, [Domestic conference]
• Synergy of Ru and Ir electrocatalysts supported on Ketjenblack for Selective Electrohydrogenation of Toluene to Methylcyclohexane　　　　　　　　　　　　　　　
  Yuta INAMI, Hitoshi OGIHARA, Ichiro YAMANAKA
  Aug. 2018, [International conference]
• Nickel phosphide catalyst for direct dehydrogenative conversion of methane to higher hydrocarbons　　　　　　　　　　　　　　　
  Arnoldus L. DIPU, Shunya OBUCHI, Yuta NISHIKAWA, Hitoshi OGIHARA, Ichiro YAMANAKA
  Aug. 2018, [International conference]
• Effect of regeneration process through coke combustion and reduction on catalytic activity during n-butane dehydrogenation over PtSn/CeO2 catalysts　　　　　　　　　　　　　　　
  Daiki SAMPEI, Hayato NAMOTO, Mitsuhiko SATO, Miru HIRAHARA, Masa-aki OHSHIMA, Hitoshi OGIHARA, Hideki KUROKAWA, Hiroshi MIURA
  Aug. 2018, [International conference]
• Effects of metal oxide addition to PtSn/MgO-Al2O3 catalysts on activity for n-butane dehydrogenation in the presence of steam　　　　　　　　　　　　　　　
  Yuki TAKAYAMA, Daiki SAMPEI, Miru HIRAHARA, Masa-aki OHSHIMA, Hitoshi OGIHARA, Hideki KUROKAWA, Hiroshi MIURA
  Aug. 2018, [International conference]
• Direct Dehydrogenative Conversion of Methane into Higher Hydrocarbons through Liquid-Metal Indium Catalyst　　　　　　　　　　　　　　　
  Yuta NISHIKAWA, Hitoshi OGIHARA, Yuki OHTSUKA, Akira NAKAYAMA, Jun-ya HASEGAWA
  Aug. 2018, [International conference]
• メタン/エタン混合ガスの脱水素的多量化反応に対する液体金属の触媒作用　　　　　　　　　　　　　　　
  田島寬輝、荻原仁志、黒川秀樹
  Jun. 2018, [Domestic conference]
• プロトン伝導膜と電極触媒が協同する物質転換プロセスの開拓　　　　　　　　　　　　　　　
  荻原仁志,山中一郎
  May 2018, [Domestic conference]
• メタノール水溶液の電解改質による水素発生に有効なPt電極触媒の開発　　　　　　　　　　　　　　　
  岸怜児、荻原仁志、黒川秀樹
  May 2018, [Domestic conference]
• 液相での酸化物層堆積プロセスによるPtナノ粒子のシンタリング抑制　　　　　　　　　　　　　　　
  臼井啓皓、荻原仁志、黒川秀樹
  May 2018, [Domestic conference]
• メタン/エタン混合ガスの脱水素的多量化反応に有効な液体金属触媒系の開発　　　　　　　　　　　　　　　
  田島寬輝、荻原仁志、黒川秀樹
  May 2018, [Domestic conference]
• メタン分解による水素と低級炭化水素の合成および副生炭素の有効利用　　　　　　　　　　　　　　　
  今井菜通子
  May 2018, [Domestic conference]
• n-ブタン脱水素反応のためのAl2O3担持PtAgバイメタリック触媒の開発―調製方法と触媒性能―　　　　　　　　　　　　　　　
  名本隼人、佐藤三彦、平原実留、荻原仁志、黒川秀樹、三浦 弘
  May 2018, [Domestic conference]
• n-ブタン脱水素反応によるブテン類製造のためのPt/ZnO-Al2O3触媒におけるZnOの効果　　　　　　　　　　　　　　　
  大宮裕美子、朽木晴治、平原実留、荻原仁志、黒川秀樹、三浦 弘
  May 2018, [Domestic conference]
• 含窒素ポリマーから合成したCo-N-C化合物触媒によるCO2の気相電解還元反応　　　　　　　　　　　　　　　
  荻島裕司・仙波雄毅・荻原仁志・山中一郎
  Mar. 2018, [Domestic conference]
• Theoretical Study on Conversion of Methane to Higher Hydrocarbons by Liquid-Metal Indium　　　　　　　　　　　　　　　
  大塚勇起
  Mar. 2018, [International conference]
• 含窒素ポリマーから合成したCo-N-C化合物触媒によるCO2の気相電解還元反応　　　　　　　　　　　　　　　
  山中一郎
  Sep. 2017, [Domestic conference]
• 含窒素ポリマーを用いて合成したCo-N-C電極触媒によるCO2選択還元　　　　　　　　　　　　　　　
  仙波雄毅
  Sep. 2017, [Domestic conference]
• 水素化触媒担持ガス拡散層を用いたトルエン電解水素化反応　　　　　　　　　　　　　　　
  井波雄太
  Sep. 2017, [Domestic conference]
• Pt-C-Nafion固体触媒による純過酸化水素水の直接合成　　　　　　　　　　　　　　　
  山中一郎
  Sep. 2017, [Domestic conference]
• シリカ担持Ni-P触媒によるメタンの脱水素多量化反応　　　　　　　　　　　　　　　
  西川祐太
  Sep. 2017, [Domestic conference]
• 金属インジウム液体によるメタンのCH活性化反応に関する理論的研究　　　　　　　　　　　　　　　
  大塚勇起
  Sep. 2017, [Domestic conference]
• Preparation of Hybrid Microsphere for Optical Cavity on Hydrophobic Substrate　　　　　　　　　　　　　　　
  3rd International Conference on Science and Technology for Advanced Ceramics (STAC3), 2009
  Poster presentation
• Preparation of Superhydrophobic Films by Electrophoretic Deposition of Hydrophobic or Hydrophilic Particles as the Raw Materials　　　　　　　　　　　　　　　
  2009
• Preparation of Hybrid Microsphere for Optical Cavity on Hydrophobic Substrate　　　　　　　　　　　　　　　
  2009
  Poster presentation
• ITOナノ粒子と非対称ビオロゲンを用いた薄膜のエレクトロクロミック特性の検討　　　　　　　　　　　　　　　
  2009
• 硬質Ni-B/ダイヤモンド複合めっきの作製とその諸性質の検討　　　　　　　　　　　　　　　
  2009
• 硬質Ni-B電解めっきの作製と諸性質の検討　　　　　　　　　　　　　　　
  2009
• 親水性粒子を用いた電気泳動法による超撥水薄膜の作製　　　　　　　　　　　　　　　
  2009
• Preparation of Superhydrophobic Films by Electrophoretic Deposition of Hydrophobic or Hydrophilic Particles as the Raw Materials　　　　　　　　　　　　　　　
  2009
• SiO₂薄膜の撥水性に対するSiO₂粒径の影響　　　　　　　　　　　　　　　
  2009
• Ni-P/SiC複合めっき膜の平滑性への電流密度と添加剤の効果　　　　　　　　　　　　　　　
  2009
• Fabrication of Superhydrophobic Films Using Electrophoretic Deposition　　　　　　　　　　　　　　　
  The IUMRS International Conference in Asia 2008, 2008
• Fabrication of Super Hard Ni-B/Diamond Coatings by Wet Process　　　　　　　　　　　　　　　
  The IUMRS International Conference in Asia 2008, 2008
  Poster presentation
• 非対称ビオロゲンを用いた有機色素薄膜の作製とＥＣ特性の検討　　　　　　　　　　　　　　　
  2008
• 泳動電着法を用いた超撥水薄膜の作成　　　　　　　　　　　　　　　
  2008
• ITOナノ粒子と非対称ビオロゲンを用いた有機薄膜の作製とEC特性の検討　　　　　　　　　　　　　　　
  2008
• 沈降共析法を用いたNi-P/サブミクロンダイヤモンド粒子複合めっきの作製　　　　　　　　　　　　　　　
  2008
• 二段階法による超硬Ni-B/ダイヤモンド複合めっきの作製とその諸性質の検討　　　　　　　　　　　　　　　
  2008
• 泳動電着法による超撥水薄膜の作製　　　　　　　　　　　　　　　
  2008
• ITO粒子薄膜上での非対称ビオロゲン界面活性剤のエレクトロクロミック特性　　　　　　　　　　　　　　　
  2008
• 超撥水性を有する色素薄膜の作製　　　　　　　　　　　　　　　
  2008
• Fabrication of Superhydrophobic Films Using Electrophoretic Deposition　　　　　　　　　　　　　　　
  2008
• Fabrication of Super Hard Ni-B/Diamond Coatings by Wet Process　　　　　　　　　　　　　　　
  2008
  Poster presentation

• Apr. 2023 - Present
  物理化学III
• Apr. 2022 - Present
  電極触媒化学特論
• Sep. 2018 - Present
  触媒工業化学特論Ⅱ
• Sep. 2017 - Present
  応用化学実験Ⅳ
• Sep. 2017 - Present
  物理化学演習Ⅱ
• Sep. 2017 - Present
  物理化学Ⅱ
• Apr. 2017 - Present
  応用化学実験Ⅰ
• Aug. 2021 - Aug. 2021
  環境物質科学特別講義II（集中講義）
• Apr. 2007 - Aug. 2016
  応用化学実験第三
• Apr. 2007 - Aug. 2015
  実践応用化学第三

• Apr. 2024

• 電解発生酸素種を活用した電極触媒酸化プロセスの開発　　　　　　　　　　　　　　　
  Apr. 2024 - Mar. 2027
  Principal investigator
  Grant amount(Total)：18590000, Direct funding：14300000, Indirect funding：4290000
  Grant number：24K01250
• 環境調和型分子変換を指向する電極触媒プロセスの開拓　　　　　　　　　　　　　　　
  2024 - 2025
  Principal investigator
• 表面水素工学：水素スピルオーバー現象を活用した新規触媒プロセス　　　　　　　　　　　　　　　
  Aug. 2021 - Mar. 2024
  Coinvestigator
  Grant amount(Total)：34060000, Direct funding：26200000, Indirect funding：7860000
  Grant number：21H05099
• 前駆体集積法によるペロブスカイトナノ構造体の合成と革新的電解プロセスへの応用　　　　　　　　　　　　　　　
  Apr. 2021 - Mar. 2024
  Principal investigator
  Grant amount(Total)：17290000, Direct funding：13300000, Indirect funding：3990000
  Grant number：21H01710
• CO₂の気相電解還元による炭化水素燃料の直接合成可能な電極触媒の研究開発／炭化水素燃料成分の直接合成可能な新電極触媒の探索研究　　　　　　　　　　　　　　　
  2022 - 2024
• 複合酸化物ナノ粒子の包括合成を基盤とする新規電解プロセスの開拓　　　　　　　　　　　　　　　
  2021 - 2023
  Principal investigator
• Controlling function of solid catalysts by Atomic Layer Deposition (ALD) technique in the liquid phase　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Apr. 2018 - Mar. 2022
  Ogihara Hitoshi, Saitama University, Principal investigator
  Grant amount(Total)：4290000, Direct funding：3300000, Indirect funding：990000
  Functional materials were developed using the atomic layer deposition technique in the liquid phase. A solution containing metal precursors was dropped into nanocarbon powders and the solvent was removed, metal precursors are deposited on the nanocarbon surface on a nanoscale. For example, when tetraethyl orthosilicate was used as a precursor, a silica layer of several nanometers was obtained.
  We named this liquid-phase atomic layer deposition method the "precursor accumulation method" and developed the synthesis of oxide nanomaterials by this method. We found that LaCoO3 nanoparticles can be synthesized by an extremely simple process and that the obtained LaCoO3 nanoparticles are highly active as an anode catalyst for water electrolysis. The results also suggest that the precursor accumulation method may be applicable to the synthesis of various mixed-metal oxide nanoparticles.
  Grant number：18K04832
• 反応場分離を利用したメタン資源化触媒の創成　　　　　　　　　　　　　　　
  2017 - 2020
• Electrochemical Hydrogen Production from Hydrogen-Storage-Medium at Mild Conditions　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (B), Apr. 2016 - Mar. 2019
  Ogihara Hitoshi, Principal investigator
  Grant amount(Total)：4160000, Direct funding：3200000, Indirect funding：960000
  Researches on hydrogen storage medium are active for the purpose of using hydrogen as clean energy. In order to use hydrogen in the infrastructure, a system that generates hydrogen quickly under mild conditions is required. In this study, we developed an electrolysis system that can extract hydrogen from hydrogen storage medium at normal temperature and pressure.
  Among several hydrogen storage medium, methanol generated hydrogen at the lowest electrolytic voltage. Analysis of the product showed that methanol electrolysis produced CO2 simultaneously with hydrogen. Therefore, CO2 absorbents were added to the electrolysis system to produce pure hydrogen. Although some CO2 absorbents negatively affected the electrolytic system, it was possible to produce pure hydrogen by using polyethyleneimine without giving negative effect on electrolytic voltage.
  Grant number：16K18287
• 液体金属による未利用オフガスの化学転換　　　　　　　　　　　　　　　
  2016 - 2019
  Principal investigator
• アルコール系水素貯蔵媒体の電気化学的脱水素プロセスの構築　　　　　　　　　　　　　　　
  2016
• 金属の腐食を防止する超撥水ナノ粒子フィルムの創成　　　　　　　　　　　　　　　
  2012 - 2013
  Principal investigator
• Preparation of super hard Ni /nano- and micro-diamond particles composite coatings　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), 2008 - 2010
  SAJI Tetsuo; OGIHARA Hitoshi, Tokyo Institute of Technology, Coinvestigator
  Grant amount(Total)：4680000, Direct funding：3600000, Indirect funding：1080000
  Super hard Ni-B/diamond composite coatings were prepared by wet methods. The coating of the first method was composed of electrophoretic deposition of diamond particles with electroless deposition of Ni-B matrix. The Vickers micro-hardness of the coating was 2,500 Hv after heat treatment. The coating of the second method was prepared by electrodeposition of Ni-B/diamond coating from Ni-B bath dispersing diamond particles. The micro-hardness of this coating was 2,300 Hv after heat treatment. The formations of super hard coatings were ascribed to the hardness of diamond and Ni-B matrix.
  Grant number：20550172
• Preparation of Carbon Nanotube Composite Thin Films Using Electrophoretic Deposition Technique　　　　　　　　　　　　　　　
  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Young Scientists (Start-up), 2007 - 2008
  OGIHARA Hitoshi, Tokyo Institute of Technology, Principal investigator
  Grant amount(Total)：3115000, Direct funding：2710000, Indirect funding：405000
  Grant number：19810004
• 炭化水素分解によるカーボンナノファイバーの合成とその応用　　　　　　　　　　　　　　　
  2005 - 2007
  Principal investigator
  Grant amount(Total)：2200000, Direct funding：2200000
  Grant number：05J08300