Selectivity Control of CO2 Reduction in an Inorganic Artificial Photosynthesis System

被引：9
|
作者：
Hashiba, Hiroshi [1 ]
Yotsuhashi, Satoshi [1 ]
Deguchi, Masahiro [1 ]
Yamada, Yuka [1 ]
Ohkawa, Kazuhiro [2 ]
机构：
[1] Panasonic Corp, Adv Technol Res Lab, Kyoto 6190237, Japan
[2] Tokyo Univ Sci, Dept Appl Phys, Tokyo 1258585, Japan
来源：
APPLIED PHYSICS EXPRESS | 2013年 / 6卷 / 09期
关键词：
VISIBLE-LIGHT-DRIVEN; CARBON-DIOXIDE; ELECTROCHEMICAL REDUCTION; PHOTOCATALYTIC REDUCTION; WATER; ELECTRODE;
D O I：
10.7567/APEX.6.097102
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We demonstrated that the selectivity of photo electrochemical CO2 reduction can be controlled in an inorganic artificial photosynthesis system using an AlGaN/GaN photo electrode. By increasing input light intensity and the use of a gold cathode, the Faradaic efficiency of CO dramatically increases from 30% to over 80% while that of H-2 decreases. We observed that the cathode potential resulting from illumination determines the ratio of CO and H-2. With this system, it is possible to switch the main reaction product from CO to HCOOH, which is also effective even under intense illumination. (c) 2013 The Japan Society of Applied Physics
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页数：4
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