研究者データベース

北野 翔(キタノ シヨウ)
工学研究院 応用化学部門 機能材料化学分野
特任助教

基本情報

所属

  • 工学研究院 応用化学部門 機能材料化学分野

職名

  • 特任助教

学位

  • 博士(工学)(近畿大学)

科研費研究者番号

  • 50736840

J-Global ID

研究キーワード

  • 電気化学   光触媒   ソルボサーマル合成   ナノシート   金属酸化物   

研究分野

  • ものづくり技術(機械・電気電子・化学工学) / 触媒プロセス、資源化学プロセス
  • ナノテク・材料 / エネルギー化学

研究活動情報

論文

  • J. F. Cheng, J. Yang, S. Kitano, G. Juhasz, M. Higashi, M. Sadakiyo, K. Kato, S. Yoshioka, T. Sugiyama, M. Yamauchi, N. Nakashima
    ACS Catalysis 9 8 6974 - 6986 2019年08月 [査読有り][通常論文]
  • H. Razavi-Khosroshahi, S. Mohammadzadeh, M. Hojamberdiev, S. Kitano, M. Yamauchi, M. Fuji
    Dalton Transactions 48 25 9284 - 9290 2019年07月07日 [査読有り][通常論文]
  • H. Razavi-Khosroshahi, S. Mohammadzadeh, M. Hojamberdiev, S. Kitano, M. Yamauchi, M. Fuji
    Advanced Powder Technology 30 7 1290 - 1296 2019年07月 [査読有り][通常論文]
  • Ghuman Kulbir Kaur, Tozaki Kota, Sadakiyo Masaaki, Kitano Sho, Oyabe Takashi, Yamauchi Miho
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS 21 9 5117 - 5122 2019年03月07日 [査読有り][通常論文]
  • T. Fukushima, S. Kitano, S. Hata, M. Yamauchi
    Science and Technology of Advanced Materials 19 1 142 - 152 2018年02月15日 [査読有り][通常論文]
  • Inorganic nanocatalysts for the electronic power circulation using alcohol/carboxylic acid redox couples
    Yamauchi Miho, Kitano Sho, Sadakiyo Masaaki
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 254 2017年08月20日 [査読有り][通常論文]
  • Sho Kitano, Masaaki Sadakiyo, Kenichi Kato, Miho Yamauchi, Hiroyuki Asakura, Tsunehiro Tanaka, Keiji Hashimoto, Hiroshi Kominami
    APPLIED CATALYSIS B-ENVIRONMENTAL 205 340 - 346 2017年05月 [査読有り][通常論文]
     
    For a rhodium ion-modified TiO2 (Rh3+/TiO2) photocatalyst responding to visible light, control of the structure of the Rh3+ modifier and effects of the structures of the Rh3+ modifier on photocatalytic activities were examined. A TiO2 support was pre-calcined to maintain crystallinity and specific surface area during post-calcination, and the structure of the Rh3+ modifier for Rh3+/TiO2 was changed by post-calcination without causing changes in the crystallinity and specific surface area of the TiO2 support. In mineralization of acetone under irradiation of visible light, the photocatalytic activities of the post-calcined Rh3+/TiO2 showed a volcano-like tendency as a function of post-calcination temperature. The results of this study showed that an atomically isolated structure of the Rh3+ modifier was preferable for high activities and that aggregation of the Rh species led to a decrease in the activities. (C) 2016 Elsevier B.V. All rights reserved.
  • Sho Kitano, Atsuhiro Tanaka, Keiji Hashimoto, Hiroshi Kominami
    APPLIED CATALYSIS A-GENERAL 521 202 - 207 2016年07月 [査読有り][通常論文]
     
    Metal ion-modified TiO2 photocatalysts designated by combinations of various metal ions and TiO2 powders that respond to visible light and exhibit controllable photocatalytic oxidative performances were examined. The photocatalytic oxidative performances were evaluated by selective oxidation of benzyl alcohol in water in the presence of O-2 under irradiation of visible light. The TiO2 samples modified with Ru3+, Pd2+ and Rh3+ (Ru3+/TiO2, Pd2+/TiO2 and Rh3+/TiO2) exhibited high levels of photocatalytic activity. The effects of metal ions and the kind of TiO2 on photocatalytic performances of Rh3+/TiO2 and Ru3+/TiO2 were investigated in detail. (C) 2015 Elsevier B.V. All rights reserved.
  • Sho Kitano, Miho Yamauchi, Shinichi Hata, Ryota Watanabe, Masaaki Sadakiyo
    GREEN CHEMISTRY 18 13 3700 - 3706 2016年 [査読有り][通常論文]
     
    We demonstrate the production of glycolic acid, an industrially important alcoholic compound, via the electrochemical reduction of oxalic acid, which is procurable from biomass, and electro-oxidation of water with the help of renewable light energy for the first time. In principle, this new synthesis system is achievable while minimizing the consumption of fossil resources. We built a precious-metal free electrosynthesis system by employing a TiO2 cathode for oxalic acid reduction and a WO3 photoanode for water oxidation. The alcohol production proceeds during the application of electric power above 2.1 V in the dark. Notably, UV-visible light irradiation of the WO3 photoanode enables glycolic acid electrosynthesis above 0.5 V, which is lower (by 0.6 V) than the theoretical bias, i.e., 1.1 V. Glycolic acid electrosynthesis with an 80% high Faradaic efficiency was achieved on applying a bias of 1.5 V under UV-visible irradiation (lambda > 300 nm).
  • Takeshi Matsumoto, Masaaki Sadakiyo, Mei Lee Ooi, Sho Kitano, Tomokazu Yamamoto, Syo Matsumura, Kenichi Kato, Tatsuya Takeguchi, Miho Yamauchi
    SCIENTIFIC REPORTS 4 2014年07月 [査読有り][通常論文]
     
    An Fe group ternary nanoalloy (NA) catalyst enabled selective electrocatalysis towards CO2-free power generation from highly deliverable ethylene glycol (EG). A solid-solution-type FeCoNi NA catalyst supported on carbon was prepared by a two-step reduction method. High-resolution electron microscopy techniques identified atomic-level mixing of constituent elements in the nanoalloy. We examined the distribution of oxidised species, including CO2, produced on the FeCoNi nanoalloy catalyst in the EG electrooxidation under alkaline conditions. The FeCoNi nanoalloy catalyst exhibited the highest selectivities toward the formation of C-2 products and to oxalic acid, i.e., 99 and 60%, respectively, at 0.4 V vs. the reversible hydrogen electrode (RHE), without CO2 generation. We successfully generated power by a direct EG alkaline fuel cell employing the FeCoNi nanoalloy catalyst and a solid-oxide electrolyte with oxygen reduction ability, i.e., a completely precious-metal-free system.
  • Sho Kitano, Atsuhiro Tanaka, Keiji Hashimoto, Hiroshi Kominami
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS 16 24 12554 - 12559 2014年 [査読有り][通常論文]
     
    Photocatalytic oxidation of benzyl alcohols in aqueous suspensions of rhodium ion-modified titanium(IV) oxide (Rh3+/TiO2) in the presence of O-2 under irradiation of visible light was examined. In the photocatalytic oxidation of benzyl alcohol, benzaldehyde was obtained in a high yield (97%) with >99% conversion of benzyl alcohol. Rh3+/TiO2 photocatalysts having various physical properties were prepared using commercially available TiO2 powders as supporting materials for Rh3+ to investigate the effect(s) of physical properties of TiO2 on photocatalytic activities of Rh3+/TiO2 for selective oxidation. Adsorption properties of benzyl alcohol, benzaldehyde and benzoic acid on TiO2 were also investigated to understand the high benzaldehyde selectivity over the Rh3+/ TiO2 photocatalyst. The reaction mechanism was discussed on the basis of the results of photocatalytic oxidation of various p-substituted benzyl alcohol derivatives.
  • S. Kitano, N. Murakami, T. Ohno, Y. Mitani, Y. Nosaka, H. Asakura, K. Teramura, T. Tanaka, H. Tada, K. Hashimoto, H. Kominami
    Journal of Physical Chemistry C 117 21 11008 - 11016 2013年05月30日 [査読有り][通常論文]
  • Sho Kitano, Keiji Hashimoto, Hiroshi Kominami
    CATALYSIS TODAY 164 1 404 - 409 2011年04月 [査読有り][通常論文]
     
    Rhodium(III) ion (Rh3+)-modified TiO2 (Rh3+/TiO2) samples having various physical properties and structures (anatase and rutile) were prepared using commercially available TiO2 samples. Thus-prepared Rh3+/TiO2 samples were used for degradation of acetaldehyde or mineralization of acetone with a constant vapor pressure under irradiation of visible light and correlations between the photocatalytic activities and physical properties were investigated. Rhodium(III) ion on the surface of TiO2 worked as an inorganic photosensitizer and the Rh3+/TiO2 samples showed a kind of volcano-like tendency against specific surface area of TiO2, indicating that the balance of surface area and crystallinity of TiO2 is important in an Rh3+/TiO2 photocatalyst. The latter reaction system was found to be a simple and convenient method to evaluate the activity of a photocatalyst in a short time. The role of Rh3+ as a catalyst for multi-electron reduction of oxygen is discussed on the basis of results obtained for Rh3+-modified rutile-type TiO2 samples. (C) 2010 Elsevier B. V. All rights reserved.
  • Sho Kitano, Keiji Hashimoto, Hiroshi Kominami
    APPLIED CATALYSIS B-ENVIRONMENTAL 101 3-4 206 - 211 2011年01月 [査読有り][通常論文]
     
    Using the adsorption method, small amounts of rhodium ion (Rh(3+)) or copper ion (Cu(2+)) were loaded on nanocrystalline titanium(IV) oxide (TiO(2)) with various physical properties prepared by the HyCOM (hydrothermal crystallization in organic media) method and subsequent calcination at various temperatures. In photocatalytic degradation of 2-propanol under visible light irradiation, Rh(3+)-modified HyCOM-TiO(2) samples exhibited higher levels of activity than did Cu(2+)-modified HyCOM-TiO(2) samples and the nitrogen-doped TiO(2) sample. The Rh(3+)-modified HyCOM-TiO(2) samples showed a volcano-like tendency with calcination temperature, suggesting that the balance of surface area and crystallinity of TiO(2) is important in an Rh(3+)/TiO(2) photocatalyst. Rutile-type TiO(2) modified with Cu(2) exhibited the highest level of activity among the Cu(2+)/HyCOM-TiO(2) samples. (c) 2010 Elsevier B.V. All rights reserved.
  • Sho Kitano, Keiji Hashimoto, Hiroshi Kominami
    CHEMISTRY LETTERS 39 6 627 - 629 2010年06月 [査読有り][通常論文]
     
    Using adsorption method, a small amount of rhodium ion (Rh3+) was loaded on nanocrystalline titanium(IV) oxide (TiO2) with various physical properties prepared by HyCOM and subsequent calcinations at various temperatures. In photocatalytic degradation of 2-propanol under visible light irradiation, Rh3+-modified HyCOM-TiO2 samples exhibited higher levels of activity than did nitrogen-doped TiO2 sample and showed a volcano-like tendency with calcination temperature, suggesting that the balance of surface area and crystallinity of TiO2 is important in an Rh3+/TiO2 photocatalyst.
  • Keiji Hashimoto, Katutoshi Sumida, Sho Kitano, Kazuto Yamamoto, Nobuaki Kondo, Yoshiya Kera, Hiroshi Kominami
    CATALYSIS TODAY 144 1-2 37 - 41 2009年06月 [査読有り][通常論文]
     
    Titanium(IV) oxide samples modified with platinum or rhodium chloride (H(2)PtCl(6)/TiO(2) or RhCl(3)/TiO(2)) were prepared by an impregnation method and post-calcination at various temperatures and were used for photo-oxidation of nitrogen oxide under irradiation of visible light or UV light. Turnover numbers of both the catalysts were maintained at temperatures Lip to 350 degrees C under 24-h irradiation of visible light, although the specific surface area of the catalysts decreased greatly with increase in post-calcination temperature. The turnover number of H(2)PtCl(6)/TiO(2) was about two-times larger than that of RhCl(3)/TiO(2). Only a small amount of released NO(2) was observed in the RhCl(3)/TiO(2) catalyst, whereas in the H(2)PtCl(6)/TiO(2) catalyst, the amount of NO(2) released to gas phase increased with an increase in oxidation products. The small amount of released NO(2) indicates that most of the NOx adsorbed on RhCl(3)/TiO(2) as an adsorption form of nonvolatile NO(3), whereas the amount of adsorbed NO(2) on H(2)PtCl(6)/TiO(2) was about four-times larger than that on RhCl(3)/TiO(2). The results indicate that the oxidation rate of NO(2) to NO(3)-over RhCl(3)/TiO(2) was faster than that over H(2)PtCl(6)/TiO(2). These results strongly suggest that the Cl radical induced by visible light was not directly related to the photo-oxidation of NO to NO(2) and NO(3) and that the complex species of RhCl(3) and H(2)PtCl(6) contributed to the photo-oxidation. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.


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