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Two step water splitting into H2 and O2 under visible light by ATaO2N (A=Ca, Sr, Ba) and WO3 with IO3-/I- shuttle redox mediator
Title: | Two step water splitting into H2 and O2 under visible light by ATaO2N (A=Ca, Sr, Ba) and WO3 with IO3-/I- shuttle redox mediator |
Authors: | Higashi, Masanobu Browse this author | Abe, Ryu Browse this author | Teramura, Kentaro Browse this author | Takata, Tsuyoshi Browse this author | Ohtani, Bunsho Browse this author | Domen, Kazunari Browse this author |
Keywords: | Photocatalyst | Z-scheme | two step water splitting | oxynitride | ATaO2N |
Issue Date: | 4-Feb-2008 |
Publisher: | Elsevier B.V. |
Journal Title: | Chemical Physics Letters |
Volume: | 452 |
Issue: | 1-3 |
Start Page: | 120 |
End Page: | 123 |
Publisher DOI: | 10.1016/j.cplett.2007.12.021 |
Abstract: | Two-step water splitting into H2 and O2 under visible light irradiation is examined combining Pt-ATaO2N (A=Ca, Sr, Ba) as a H2 evolution photocatalyst and Pt-WO3 as an O2 evolution photocatalyst by IO3-/I- shuttle redox-mediator. Overall water splitting proceeds when Pt-CaTaO2N or Pt-BaTaO2N is used for H2 evolution photocatalyst, whereas photo-induced self-oxidative decomposition is predominant for Pt-SrTaO2N. The onset wavelengths of H2 evolution almost accord with the absorption edges of CaTaO2N and BaTaO2N. The available wavelength of light for H2 evolution in the present two-step water splitting system has been extended to 660 nm by using BaTaO2N. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/44874 |
Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 大谷 文章
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