Modification of Wide-Band-Gap Oxide Semiconductors with Cobalt Hydroxide Nanoclusters for Visible-Light Water Oxidation

被引：76

作者：

Maeda, Kazuhiko ^{[1
]}

Ishimaki, Koki ^{[1
]}

Tokunaga, Yuki ^{[1
]}

Lu, Daling ^{[2
]}

Eguchi, Miharu ^{[3
]}

机构：

[1] Tokyo Inst Technol, Dept Chem, Sch Sci, Meguro Ku, 2-12-1-NE-2 Ookayama, Tokyo 1528550, Japan

[2] Tokyo Inst Technol, Ctr Adv Mat Anal, Midori Ku, 4259 Nagatsuta Cho, Yokohama, Kanagawa 2268503, Japan

[3] Natl Inst Mat Sci, Polymer Mat Unit, Elect Funct Mat Grp, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2016年 / 55卷 / 29期

关键词：

heterogeneous catalysis; photocatalysis; semiconductors; solar energy; water oxidation; HYDROGEN-PRODUCTION; PHOTOSYSTEM-II; PHOTOCATALYST; IRRADIATION; REDUCTION; CATALYST; PHOTOANODE; POWDER; NM; ELECTROCATALYSTS;

D O I：

10.1002/anie.201602764

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cobalt-based compounds, such as cobalt(II) hydroxide, are known to be good catalysts for water oxidation. Herein, we report that such cobalt species can also activate wide-band-gap semiconductors towards visible-light water oxidation. Rutile TiO2 powder, a well-known wide-band-gap semiconductor, was capable of harvesting visible light with wavelengths of up to 850 nm, and thus catalyzed water oxidation to produce molecular oxygen, when decorated with cobalt(II) hydroxide nanoclusters. To the best of our knowledge, this system constitutes the first example that a particulate photocatalytic material that is capable of water oxidation upon excitation by visible light can also operate at such long wavelengths, even when it is based on earth-abundant elements only.

引用

页码：8309 / 8313

页数：5

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