Confined cavity on a mass-producible wrinkle film promotes selective CO(2)reduction

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Reduction of CO(2)to carbon monoxide (CO) is the starting point for producing valuable carbon chemicals and liquid fuels. To date, efficient CO(2)electroreduction to CO has been accomplished predominantly by using the control of the structural parameters of a catalyst, including its nanostructure and surface morphology. In this study, the highly selective CO formation (similar to 90% of faradaic efficiency) at a low applied potential (-0.4 Vvs.reverse hydrogen electrode) is reported by using the control of the local pH near the reaction site, which has been of less interest compared to other factors in prior studies. The local pH near the reaction site was controlled by using a confined cavity in the Au wrinkle film. Experimental and computational calculation results revealed that such enhancement is mainly related to the few-micrometer-amplitude confined space in the tens of nanometers thickness Au wrinkle film. Notably, the fabrication of the wrinkle catalyst film was extremely simple, permitting large-scale fabrication.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2020-08
Language
English
Article Type
Article
Citation

JOURNAL OF MATERIALS CHEMISTRY A, v.8, no.29, pp.14592 - 14599

ISSN
2050-7488
DOI
10.1039/d0ta03400b
URI
http://hdl.handle.net/10203/281946
Appears in Collection
ME-Journal Papers(저널논문)CBE-Journal Papers(저널논문)
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