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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

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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)

Submitter: 大谷 文章

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