Cu(II)/Cu(0) electrocatalyzed CO2 and H2O splitting

被引：73

作者：

Chen, Zuofeng ^{[1
]}

Kang, Peng ^{[1
]}

Zhang, Ming-Tian ^{[1
]}

Stoner, Brian R. ^{[2
]}

Meyer, Thomas J. ^{[1
]}

机构：

[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

[2] RTI Int, Res Triangle Pk, NC 27709 USA

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2013年 / 6卷 / 03期

基金：

美国国家科学基金会;

关键词：

CARBON-DIOXIDE; ELECTROCHEMICAL REDUCTION; WATER; HYDROCARBONS; COPPER(II); ELECTRODES;

D O I：

10.1039/c3ee24487c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In an earlier report we showed that in concentrated carbonate/bicarbonate solutions, simple Cu(II) salts are highly reactive as water oxidation electro-catalysts. We report here, based on earlier results in the literature, that Cu(0) films on a boron-doped diamond substrate are active toward CO2 reduction to CO and formate. The current densities are higher by similar to 2.8 fold than a bulk polycrystalline copper electrode due to the enhanced surface area of the electroplated Cu(0) films. When combined, the two half reactions, catalyzed by Cu(II) and Cu(0), provide a basis for the net electrochemical splitting of CO2 into CO/HCOO- and O-2 in CO2/HCO3- buffered aqueous solutions. The resulting electrochemical cell is remarkable for the simple nature of the catalysts, solution conditions, and cell configuration.

引用

页码：813 / 817

页数：5

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