Solar CO2 reduction using H2O by a semiconductor/metal-complex hybrid photocatalyst: enhanced efficiency and demonstration of a wireless system using SrTiO3 photoanodes

被引：236

作者：

Arai, Takeo ^{[1
,2
]}

Sato, Shunsuke ^{[1
,2
]}

Kajino, Tsutomu ^{[1
,2
]}

Morikawa, Takeshi ^{[1
,2
]}

机构：

[1] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan

[2] JST, ACT C, Kawaguchi, Saitama 3320012, Japan

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2013年 / 6卷 / 04期

关键词：

CARBON-DIOXIDE; HYDROGEN-PRODUCTION; ELECTROCHEMICAL REDUCTION; NANOTUBE ARRAYS; WATER; GENERATION; ELECTROCATALYST; PHOTOELECTRODES; ELECTROLYSIS; PERFORMANCE;

D O I：

10.1039/c3ee24317f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solar formate production from CO2 and H2O was achieved with no external electrical bias by combining an InP/[RuCP] semiconductor/metal-complex hybrid photocathode with a reduced SrTiO3 (r-STO) photoanode. The conversion efficiency from solar to chemical energy was improved from 0.03 to 0.14% compared to a previous system utilizing a TiO2 photoanode. Stimulated electron transfer from the photoanode to the photocathode is the main cause for the observed improvement, due to an enlarged difference in the band-energy position between r-STO and InP. Since r-STO showed high H2O oxidation selectivity even in the presence of formate, a r-TO/InP/[RuCP] wireless device successfully performed solar CO2 reduction in a one-compartment reactor with no proton exchange membrane, yielding a solar conversion efficiency of 0.08%.

引用

页码：1274 / 1282

页数：9

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