Enhanced selectivity for the electrochemical reduction of CO sub(2) to alcohols in aqueous solution with nanostructured Cu-Au alloy as catalyst

Electrochemical reduction of CO sub(2) in an aqueous 0.5 M KHCO sub(3) solution is studied by use of novel nanostructured Cu-Au alloys, which are prepared through electrochemical deposition with a nanoporous Cu film (NCF) as template. Linear voltammetry results show that the as-synthesized Cu-Au all...

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Bibliographic Details
Published in:Journal of power sources 2014-04, Vol.252, p.85-89
Main Authors: Jia, Falong, Yu, Xinxing, Zhang, Lizhi
Format: Article
Language:English
Subjects:
ALCOHOLS
CARBON DIOXIDE
COPPER ALLOYS (40 TO 99.3 CU)
Copper base alloys
COPPER GOLD ALLOYS
DEPOSITION
ETHYL ALCOHOL
Methyl alcohol
MICA
MICROSTRUCTURES
Nanostructure
Reduction
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Summary:Electrochemical reduction of CO sub(2) in an aqueous 0.5 M KHCO sub(3) solution is studied by use of novel nanostructured Cu-Au alloys, which are prepared through electrochemical deposition with a nanoporous Cu film (NCF) as template. Linear voltammetry results show that the as-synthesized Cu-Au alloys exhibit obvious catalysis towards electrochemical reduction of CO sub(2). Further analysis of products reveals that faradic efficiencies of alcohols (methanol and ethanol) are greatly dependent on the nanostructures and compositions of Cu-Au alloys. It is expected that this work could provide new insight into the development of powerful electrocatalysts for reduction of CO sub(2) to alcohols.
ISSN:0378-7753
DOI:10.1016/j.jpowsour.20l3.12.002