研究者詳細 - 西本　俊介

論文 - 西本　俊介

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Adaptation of Ni<sub>0.6</sub>Cu<sub>0.4</sub>/Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> cermet anodes for intermediate temperature solid oxide fuel cells to actual biogas fuel containing trace amounts of H<sub>2</sub>S: Effects of catalyst amount and fuel supply rate

Ryouma Suzuki, Taisei Sakai, Shunsuke Nishimoto, Michihiro Miyake, Yoshikazu Kameshima, Tamano Yonezawa, Makoto Shiraishi, Anna Nagai, Motohide Matsuda

Journal of the Ceramic Society of Japan 132 ( 6 ) 280 - 285 2024年6月

Fabrication of high performance Pr4Ni3O10 cathode based upon magnetic orientation behavior for intermediate-temperature solid oxide fuel cell 査読

Yuta Miyamoto, Anna Nagai, Shunsuke Nishimoto, Michihiro Miyake, Yoshikazu Kameshima, Motohide Matsuda

Materials Letters 349 134731 - 134731 2023年10月

Ni1-xCux/Ce0.9Gd0.1O1.95 cermet anodes for intermediate-temperature solid oxide fuel cells fueled with simulated biogas; their electrochemical performance and ability to inhibit carbon deposition 査読

Ryouma Suzuki, Shunsuke Nishimoto, Michihiro Miyake, Yoshikazu Kameshima, Anna Nagai, Motohide Matsuda

Journal of the Ceramic Society of Japan 131 ( 7 ) 324 - 329 2023年7月

Underwater superoleophobicity of Nb2O5 photocatalyst surface 査読

Nishimoto Shunsuke, Takiguchi Takahiro, Kameshima Yoshikazu, Miyake Michihiro

CHEMICAL PHYSICS LETTERS 726 34 - 38 2019年7月

Underwater wettability of oleic acid on TiO2 photocatalyst surface 査読

Daisuke Yabumoto, Misaki Ota, Yusuke Sawai, Shunsuke Nishimoto, Yoshikazu Kameshima, Michihiro Miyake, Eiji Fujii, Ken-ichi Katsumata

Colloids and Surfaces A: Physicochemical and Engineering Aspects 548 32 - 36 2018年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier B.V.

Rough and flat titanium dioxide (TiO2) surfaces were prepared, and the effect of water pH on the underwater wettability of oleic acid on the TiO2 surfaces was investigated. The underwater contact angle of oleic acid on the relatively flat TiO2 surface depended on the pH of water in the range pH 3–5. The repellency of oleic acid on the relatively flat TiO2 surface increased with decreasing pH. On the other hand, the hierarchical rough TiO2 surface repelled oleic acid in water, regardless of the pH of water.

DOI： 10.1016/j.colsurfa.2018.03.061

Electrochemical performance of Ni0.8Cu0.2/Ce0.8Gd0.2O1.9 cermet anodes with functionally graded structures for intermediate-temperature solid oxide fuel cell fueled with syngas 査読

Michihiro Miyake, Makoto Iwami, Mizue Takeuchi, Shunsuke Nishimoto, Yoshikazu Kameshima

Journal of Power Sources 390 181 - 185 2018年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Elsevier B.V.

The electrochemical performance of layered Ni0.8Cu0.2/Ce0.8Gd0.2O1.9 (GDC) cermet anodes is investigated for intermediate-temperature solid oxide fuel cells (IT-SOFCs) at 600 °C using humidified (3% H2O) model syngas with a molar ratio of H2/CO = 3/2 as the fuel. From the results obtained, the electrochemical performance of the functionally graded multi-layered anodes is found to be superior to the mono-layered anodes. The test cell with a bi-layered anode consisting of 100 mass% Ni0.8Cu0.2/0 mass% GDC (10M/0E) and 70 mass% Ni0.8Cu0.2/30 mass% GDC (7M/3E) exhibits high power density. The test cell with a tri-layered anode consisting of 10M/0E, 7M/3E, and 50 mass% Ni0.8Cu0.2/50 mass% GDC (5M/5E) exhibits an even higher power density, suggesting that 10M/0E and 5M/5E layers contribute to the current collecting part and active part, respectively.

DOI： 10.1016/j.jpowsour.2018.04.051

Preparation of carbon-modified NTiO2/ montmorillonite composite with high photocatalytic activity under visible light radiation 査読

Jiannan Hsing, Yoshikazu Kameshima, Shunsuke Nishimoto, Michihiro Miyake

Journal of the Ceramic Society of Japan 126 ( 4 ) 230 - 235 2018年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Ceramic Society of Japan

In this paper, the photocatalytic activity of nitrogen-doped TiO2/montmorillonite composite (NTM) was successfully enhanced by modification with carbon. NTM was made by mixing a swelling clay solution with an N-doped TiO2 solution prepared by hydrolysis of titanium tetraisopropoxide with urea. Carbon-modified Ndoped TiO2/montmorillonite composite (CNTM) was obtained by grinding the dried NTM with EtOH for 1 h, followed by calcination at 250°C in the air for 2 h. Both NTM and CNTM exhibited visible light absorption in the UVvis spectrum in the same way as commercial NTiO2 powder. Additionally, CNTM greatly extended the absorption edges to the visible light region. The photocatalytic performance of NTM and CNTM was evaluated using a degradation of bisphenol-A under visible light (&gt
420 nm) radiation. Although the commercial TiO2 powder showed less photocatalytic activity under visible light radiation, NTM, CNTM and commercial NTiO2 powder showed high photocatalytic activity. The order of degradation performance was as follows: CNTM &gt
commercial NTiO2 powder &gt
NTM. Since the TiO2 content of CNTM is ca. 30 mass% by energy dispersive spectrum analysis, it was suggested that CNTM has extremely high visible light activity.

DOI： 10.2109/jcersj2.17235

Performance of Ni0.8-xCu0.2Mx (M = Fe and Co) alloy-based cermet anodes for intermediate-temperature solid oxide fuel cells fueled with syngas 査読

Michihiro Miyake, Sadaki Matsumoto, Shunsuke Nishimoto, Yoshikazu Kameshima

Journal of the Ceramic Society of Japan 125 ( 11 ) 833 - 836 2017年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Ceramic Society of Japan

The performance of Ni-based trimetallic alloy cermet anodes, Ni0.8-xCu0.2Mx (M = Fe and Co
x = 0.1, 0.2, and 0.3)/ Ce0.8Sm0.2O1.9 (SDC), was investigated for intermediate-temperature (500700° C) solid oxide fuel cells (IT-SOFCs), using humidified (3% H2O) model syngas with a molar ratio of H2/CO = 3/2 as the fuel. Though doping Fe or Co 10 mol% into the Ni0.8Cu0.2/SDC anode led the cell performance to the increase, the cell performance decreased as Fe or Co content increased further. On the one hand, doping Fe or Co into the Ni0.8Cu0.2/SDC anode further effectively inhibited carbon deposition owing to CO on the anode. Our results suggest that the Ni0.7Cu0.2Fe0.1/SDC and Ni0.7Cu0.2Co0.1/SDC anodes are more promising materials than Ni0.8Cu0.2/SDC anode for syngas fuel in IT-SOFCs.

DOI： 10.2109/jcersj2.17110

Intermediate-temperature solid oxide fuel cell employing reformed effective biogas: Power generation and inhibition of carbon deposition 査読

Michihiro Miyake, Makoto Iwami, Kenta Goto, Kazuhito Iwamoto, Koki Morimoto, Makoto Shiraishi, Kenji Takatori, Mizue Takeuchi, Shunsuke Nishimoto, Yoshikazu Kameshima

JOURNAL OF POWER SOURCES 340 319 - 324 2017年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

A power generation system consisting of an intermediate-temperature solid oxide fuel cell (IT-SOFC) and an external reformer for biogas is developed, and its performance is investigated for advanced use of effective biogas. The IT-SOFC is fueled with syngas produced via biogas reforming, and is successfully operated at 600 and 700 degrees C using Ni0.8Cu0.2 alloy/gadolinia-doped ceria electrolyte (Ni0.8Cu0.2/GDC) cermet anodes and a LaAlO3 supported-Ni (Ni/LaAlO3) catalyst. The Ni/LaAlO3 catalyst stably exhibits high reforming performance for effective biogas at 800 degrees C for 27 h, and carbon deposition on the catalyst is prevented. The electrochemical performance of the Ni0.8Cu0.2/GDC cermet anode using syngas fuel possessing a H-2:CO ratio of approximately 3:1 is comparable to the performance achieved with H-2 fuel; the anode remains stable after 24 h of operation at 700 degrees C without interruption and is unaffected by carbon deposition. (C) 2016 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jpowsour.2016.11.080

Electrochemical performances of Ni1-xCux/SDC cermet anodes for intermediate-temperature SOFCs using syngas fuel 査読

Michihiro Miyake, Sadaki Matsumoto, Makoto Iwami, Shunsuke Nishimoto, Yoshikazu Kameshima

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 41 ( 31 ) 13625 - 13631 2016年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

Ni-based alloy cermet anodes,Ni1-xCux (x = 0.0, 0.2, 0.5, and 1.0)/Ce0.8Sm0.2O1.9 (SDC), were prepared for use with syngas fuel in intermediate-temperature solid oxide fuel cells by in situ reduction of Ni1-xCuxO compounds. The electrochemical performances of cells with the Ni1-xCux/SDC anodes were investigated at 700 and 600 degrees C, using humidified (3% H2O) syngas with H-2/CO = 3/2 as the fuel. Cu doping of the Ni/SDC anode effectively suppressed carbon deposition on the anode. However, the cell performance was deteriorated with increasing amounts of Cu. The Ni0.8Cu0.2/SDC anode was found to be promising for use with syngas fuel. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.ijhydene.2016.05.070

Hydrothermal synthesis and crystal structure analysis of two new cadmium bismuthates, CdBi2O6 and Cd0.37Bi 0.63O1.79 査読

Kumada, Nobuhiro, Miura, Akira, Takei, Takahiro, Nishimoto, Shunsuke, Kameshima, Yoshikazu, Miyake, Michihiro, Kuroiwa, Yoshihiro, Moriyoshi, Chikako

Journal of Asian Ceramic Societies 3 ( 3 ) 251 - 254 2015年9月

Biogas reforming over BaTi(1-x)Sn(x)03-supported Ni-based catalysts recovered from spent Ni-metal-hydride batteries 査読

Michihiro Miyake, Natsumi Tomiyama, Kazuhito Iwamoto, Kentaro Nagase, Shunsuke Nishimoto, Yoshikazu Kameshima

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 40 ( 26 ) 8341 - 8346 2015年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

BaTi1-xSnxO3-supported Ni-based catalysts recovered from spent Ni-metal-hydride (NiMH) batteries [wNi/BaTi1-xSnxO3 (x = 0.0, 0.2, 0.4, 0.6, and 1.0)] were prepared. Their catalytic activities for model biogas reforming reactions were examined at 800 degrees C and compared with that of wNi/gamma-Al2O3. According to the results, wNi/BaTi0.8Sn0.2O3 exhibited high reforming performance and high sustainability among the catalysts tested. wNi/gamma Al2O3 exhibited unsustainability due to carbon deposition, although its performance was excellent for a short time. BaTi0.8Sn0.2O3 functioned as an inhibitor, depressing carbon deposition. This function was likely due to the mobile oxide ions and alkaline earth oxides in the catalyst supports. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.ijhydene.2015.04.106

Separation of alcohol/water mixtures by ZSM-5 bulk bodies prepared with a one-pot hydrothermal method 査読

Eisaku Igi, Yoshikazu Kameshima, Shunsuke Nishimoto, Michihiro Miyake

MICROPOROUS AND MESOPOROUS MATERIALS 208 160 - 164 2015年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

The present work demonstrates a novel separation technique by ZSM-5 zeolite bulk bodies, which were successfully prepared with a one-pot hydrothermal method at 200 degrees C for 5 d, using the raw materials that are used in the synthesis of ZSM-5 powders. It is found that these materials can efficiently concentrate a 5 mass% ethanol/water mixture by vapor permeation at approximately 5 kPa to produce a permeate of approximately 76 mass% at an extremely large flux of about 35 kg.(m(2) h)(-1), even though they are porous. The permeate flux is unchanged for a long time. These bulk bodies show promise as materials for the innovative energy-efficient separation of ethanol/water, especially compared with the membranes previously used for such separations. Furthermore, they can efficiently concentrate 5 mass% methanol/water and 2-propanol/water mixtures. (C) 2015 Elsevier Inc. All rights reserved.

DOI： 10.1016/j.micromeso.2015.01.046

Water treatment efficacy of various metal oxide semiconductors for photocatalytic ozonation under UV and visible light irradiation 査読

Takayuki Mano, Shunsuke Nishimoto, Yoshikazu Kameshima, Michihiro Miyake

CHEMICAL ENGINEERING JOURNAL 264 221 - 229 2015年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

We have investigated a photocatalytic ozonation system of seven metal oxide semiconductors, TiO2 (P25), Nb2O5, SnO2, WO3, Fe2O3, In2O3, and BiVO4, under visible light both with and without UV irradiation for their efficacy in removing total organic carbon (TOC) from aqueous oxalic acid solution for water treatment. The investigation revealed that all the metal oxide samples functioned as photocatalysts for the photocatalytic ozonation system. TiO2 exhibited the highest activity under UV irradiation, and also exhibited a little activity under visible light irradiation. WO3, Fe2O3, In2O3, and BiVO4 functioned as visible-light-responsive photocatalysts and Fe2O3, In2O3, and BiVO4 were newly identified as active photocatalysts under visible light irradiation for the photocatalytic ozonation system. It is suggested that WO3 is a promising material for the photocatalytic ozonation system due to its activity in the wavelength range of solar energy. (C) 2014 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.cej.2014.11.088

Reversible Control of Underwater Oil Wettability of a Titanium Dioxide Surface through Ultraviolet and Ultrasonic Irradiation 査読

Shunsuke Nishimoto, Yuichi Mori, Yoshikazu Kameshima, Michihiro Miyake

CHEMISTRY LETTERS 44 ( 3 ) 262 - 264 2015年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：CHEMICAL SOC JAPAN

Ultraviolet (UV)-irradiated titanium dioxide (TiO2) photo-catalyst surfaces exhibit excellent oil repellency and therefore an oil droplet cannot adhere to its surface in water even when tightly pressed to it. Ultrasonic irradiation treatment in water greatly decreases the degree of underwater oleophobicity, allowing the oil droplet to adhere to the surface in water. We demonstrate that UV and ultrasonic irradiation treatment can be used to reversibly change the underwater oil repellency of TiO2 surfaces.

DOI： 10.1246/cl.140981

Underwater superoleophobicity of a robust rough titanium dioxide surface formed on titanium substrate by acid treatment 査読

Shunsuke Nishimoto, Misaki Ota, Yoshikazu Kameshima, Michihiro Miyake

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 464 33 - 40 2015年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

A robust rough titanium dioxide (TiO2) surface was prepared by acid treatment of a Ti plate and mesh. By ultraviolet (UV) irradiation, the surface exhibited superhydrophilicity and superoleophilicity in air and underwater superoleophobicity. Due to the rough surface, the underwater superoleophobicity was observed, even after dark storage for 1 week under the ambient atmosphere. The robust rough TiO2 mesh with a pore size of approximately 150 mu m functioned as a high speed oil/water separation filter with high mechanical durability and self-cleaning property. (C) 2014 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.colsurfa.2014.10.009

Self-cleaning efficiency of titanium dioxide surface under simultaneous UV irradiation of various intensities and water flow 査読

Shunsuke Nishimoto, Sana Tomoishi, Yoshikazu Kameshima, Eiji Fujii, Michihiro Miyake

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 122 ( 1426 ) 513 - 516 2014年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

We investigated the self-cleaning efficiencies of titanium dioxide (TiO2) surface under ultraviolet (UV) irradiation in combination with a water flow (UV/water) condition using oleic acid as the model surface contaminant. UV light intensities were varied from a typical indoor intensity level to a representative outdoor intensity level in Japan. The combined UV/water treatment exhibited a much higher self-cleaning efficiency than either condition alone. This suggests that the self-cleaning effect occurred at nanometer-sized photo-induced superhydrophilic domains of the TiO2 film surface located at the interface of the TiO2 surface, oleic acid, and air. (C) 2014 The Ceramic Society of Japan. All rights reserved.

DOI： 10.2109/jcersj2.122.513

TiO2-based superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast 査読

Shunsuke Nishimoto, Michiaki Becchaku, Yoshikazu Kameshima, Yuki Shirosaki, Satoshi Hayakawa, Akiyoshi Osaka, Michihiro Miyake

THIN SOLID FILMS 558 221 - 226 2014年5月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

Rough nanostructured anatase TiO2 surfaces containing many pores were prepared by the hydrothermal-based method. Surface modification with self-assembled monolayers (SAMs) of octadecylphosphonic acid (ODP) resulted in the superhydrophobic surface with an extremely high static water contact angle (CA) of 173.6 degrees +/- 1.7 degrees. This superhydrophobic surface could be converted into a superhydrophilic surface with a water CA of nearly 0 degrees by irradiating it with ultraviolet (UV) light, which induced photocatalytic decomposition of the ODP SAM. A superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast (a water CA difference of over 170 degrees) could be fabricated on the ODP-modified TiO2 surface by area-selective UV irradiation through a photomask. This is the report of the TiO2-based superhydrophobic-superhydrophilic pattern with a water CA difference of over 170 degrees, and it may be possible to use such patterns for various applications. (C) 2014 Elsevier B. V. All rights reserved.

DOI： 10.1016/j.tsf.2014.02.060

Underwater Superoleophobicity of TiO2 Nanotube Arrays 査読

Shunsuke Nishimoto, Yusuke Sawai, Yoshikazu Kameshima, Michihiro Miyake

CHEMISTRY LETTERS 43 ( 4 ) 518 - 520 2014年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：CHEMICAL SOC JAPAN

TiO2 nanotube arrays prepared by the anodization of Ti plate exhibited underwater superoleophobicity. The surface almost completely repelled the oil droplet in water, even after storage in dark for one week under ambient conditions. The TiO2 nanotube arrays fabricated on a Ti mesh were found to be useful as oil-water-separation filters.

DOI： 10.1246/cl.131155

Hydrothermal preparation of tobermorite from blast furnace slag for Cs+ and Sr2+ sorption 査読

Takuma Tsutsumi, Shunsuke Nishimoto, Yoshikazu Kameshima, Michihiro Miyake

JOURNAL OF HAZARDOUS MATERIALS 266 174 - 181 2014年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

Al-substituted 11 angstrom-tobermorite was formed by alkaline hydrothermal treatment of blast furnace slag with sodium silicate added at 180 degrees C for 2-48 h. Effects of the hydrothermal treatment time were characterized by XRD, SEM, and isothermal adsorption of N-2. Sorption characteristics of the obtained samples were examined for Cs+ and Sr2+. The sample obtained by hydrothermal treatment for 48 h (HT-48 h) consisted of calcium silicate hydrate (C-S-H), and Al-substituted 11 angstrom-tobermorite. The HT-48 h showed the highest performance for Cs+ and Sr2+ selectivity in the presence of Na+. The interlayer Na+ of Al-substituted 11 angstrom-tobermorite and surface Ca2+ played an important role in selective Cs+ and Sr2+. (C) 2014 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jhazmat.2013.12.024

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