Electrochemical H2O2 Production and Accumulation from H2O by Composite Effect of Al2O3 and BiVO4

被引：24
|
作者：
Miyase, Yuta [1 ,2 ]
Iguchi, Shoji [2 ]
Miseki, Yugo [2 ]
Gunji, Takahiro [1 ]
Sayama, Kazuhiro [1 ,2 ]
机构：
[1] Tokyo Univ Sci, Dept Pure & Appl Chem, Noda, Chiba 2788514, Japan
[2] Natl Inst Adv Ind Sci & Technol, Res Ctr Photovolta, Tsukuba, Ibaraki 3058565, Japan
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2019年 / 166卷 / 13期
关键词：
HYDROGEN-PEROXIDE PRODUCTION; WATER OXIDATION; WO3/BIVO4; PHOTOANODE; CATHODE; CARBON; OXYGEN;
D O I：
10.1149/2.0561913jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The modification effects of both BiVO4 and Al2O3 on a FTO on efficient oxidative H2O2 production and accumulation from H2O were investigated. The initial faradaic efficiency for H2O2 production (FE (H2O2)) reached 95% due to the suppressing influence of direct O-2 production via H2O oxidation on BiVO4/FTO. Al2O3 modification suppressed oxidative H2O2 decomposition to O-2, which was confirmed by changes in the I-V curves after H2O2 addition. The initial FE (H2O2) of Al2O3/BiVO4/FTO modified by chemical vapor deposition (CVD) reached 97%. Oxidative H2O2 decomposition was significantly suppressed by the loaded Al2O3, and the amount of accumulated H2O2 on this composite electrode was reached 7.5 mM at 200 C, which is the highest value in the system for oxidative H2O2 production from H2O. (C) 2019 The Electrochemical Society.
引用
收藏
页码：H644 / H649
页数：6
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