GaN:ZnO solid solution as a photocatalyst for visible-light-driven overall water splitting

被引:1270
作者
Maeda, K
Takata, T
Hara, M
Saito, N
Inoue, Y
Kobayashi, H
Domen, K
机构
[1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan
[2] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[3] Nagaoka Univ Technol, Dept Chem, Nagaoka, Niigata 9402188, Japan
[4] Kurashiki Univ Sci & Arts, Dept Chem & Biosci, Kurashiki, Okayama 7128505, Japan
关键词
D O I
10.1021/ja0518777
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Photocatalytic overall water splitting has been studied extensively from the viewpoint of solar energy conversion. Despite numerous attempts, none have yielded satisfactory results for the development of photocatalysts, which work under visible light irradiation to efficiently utilize solar energy. We report here the first example of visible-light-driven overall water splitting on a novel oxynitride photocatalyst, a solid solution of GaN and ZnO with a band gap of 2.58-2.76 eV, modified with RuO2 nanoparticles. In contrast to the conventional non-oxide photocatalysts, such as CdS, the solid solution is stable during the overall water splitting reaction. This is the first example of achieving overall water splitting by a photocatalyst with a band gap in the visible light region, which opens the possibility of new non-oxide-type photocatalysts for energy conversion. Copyright © 2005 American Chemical Society.
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页码:8286 / 8287
页数:2
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