Structural Characterization of Cu2O After the Evolution of H2 under Visible Light Irradiation

被引：38
|
作者：
Kakuta, Seiji [1 ,2 ]
Abe, Toshiyuki [1 ]
机构：
[1] Hirosaki Univ, Grad Sch Sci & Technol, Dept Frontier Mat Chem, Hirosaki, Aomori 0368561, Japan
[2] Aomori Ind Res Ctr, Aomori 0300113, Japan
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2009年 / 12卷 / 03期
关键词：
HYDROGEN; CATALYSTS;
D O I：
10.1149/1.3054330
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Photocatalysis of Cu2O powder was investigated to evaluate its ability for the stoichiometric decomposition of water into O-2 and H-2. Although thus far it has been indicated that Cu2O can function as a photocatalyst for the overall water splitting, H-2 evolution was found to take place solely while there was no generation of O-2. Moreover, the evolution rate of H-2 gradually decreased during prolonged irradiation, and consequently, the evolution of H-2 ceased. From the structural analyses of deactivated Cu2O, it appeared that the H-2 evolution originates in the self-oxidation of Cu2O to CuO. (C) 2008 The Electrochemical Society. [DOI: 10.1149/1.3054330] All rights reserved.
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收藏
页码：P1 / P3
页数：3
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