Synthesis of highly crystallized particles of transition metal oxynitrides and construction of a photocatalytic system for visible light water splitting.

2009 Fiscal Year Final Research Report

• Project/Area Number: 20760526
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Catalyst/Resource chemical process
• Research Institution: The University of Tokyo
• Principal Investigator: TAKATA Tsuyoshi The University of Tokyo, 大学院・工学系研究科, 助教 (80334499)
• Project Period (FY): 2008 – 2009
• Keywords: 光触媒

Research Abstract

Some d0-type transition metal oxynitrides were studied as photocatalyst for water cleavage to improve their performance. A new route to obtain oxynitride particles by flux assisted nitridation method was established. Highly crystallized and mono-disperse fine particles of oxyntrides were obtained by the addition of NaCl or Na_2CO_3 as a flux. Regarding the synthesis of multi-components-oxynitrides, the addition of flux resulted in the improvement of the mixing state of constituents, which enabled the doping of different metals. It was found that the doping of metal cations with lower valence than that of the parent cation was effective to enhance the photocatalytic activity of H_2 evolution. This tendency was found to be applicable to various photocatalysts.

Research Products

• [Journal Article] (2009)
  • Author(s): M. Higashi, R. Abe, T. Takata, K. Domen
  • Journal Title: Chem. Mater. 21 Pages: 1543-1549
  • Peer Reviewed
• [Journal Article] (2008)
  • Author(s): M. Higashi, R. Abe, K. Teramura, T. Takata, B. Ohtani K. Domen
  • Journal Title: Chem. Phys. Lett. 37 Pages: 120-123
  • Peer Reviewed
• [Journal Article] (2008)
  • Author(s): M. Higashi, R. Abe, A. Ishikawa, T. Takata, B. Ohtani K. Dome
  • Journal Title: Chem. Lett. Pages: 138-139
  • Peer Reviewed
• [Journal Article] (2008)
  • Author(s): K. Ogisu, A. Ishikawa, Y. Shimodaira, T. Takata, H. Kobayashi, K. Domen
  • Journal Title: J. Phys. Chem. C. 112 Pages: 11978-11984
  • Peer Reviewed
• [Journal Article]
  • Author(s): T. Takata, K. Domen
  • Journal Title: J. Phys. Chem. C. Pages: 19386-19388
  • Peer Reviewed
• [Journal Article]
  • Author(s): L. Yuliati, J. H. Yang, X. Wang, K. Maeda, T. Takata, M. Antonietti, K. Domen
  • Journal Title: J. Mater. Chem. (In press)
• [Presentation] (2010)
  • Author(s): 高田剛、堂免一成
  • Organizer: 第90回日本化学会春季年会
  • Place of Presentation: 近畿大学
  • Year and Date: 2010-03-29
• [Presentation] (2009)
  • Author(s): 高田剛、堂免一成
  • Organizer: 第29回水素エネルギー協会大会
  • Place of Presentation: タワーホール船堀
  • Year and Date: 2009-12-03
• [Presentation] (2009)
  • Author(s): 高田剛、堂免一成
  • Organizer: 第103回触媒討論会
  • Place of Presentation: 宮崎大学
  • Year and Date: 2009-09-27
• [Presentation] (2009)
  • Author(s): 高田剛、堂免一成
  • Organizer: 第89回日本化学会春季年会
  • Place of Presentation: 日本大学船橋キャンパス
  • Year and Date: 2009-03-28
• [Presentation] (2008)
  • Author(s): 高田剛、堂免一成
  • Organizer: 第102回触媒討論会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2008-09-26
• [Presentation] (2008)
  • Author(s): Tsuyoshi Takata, Kazunari Domen
  • Organizer: 14th International Conference on Catalysis
  • Place of Presentation: COEX Seoul Korea
  • Year and Date: 2008-07-14