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Issue 4, 2020
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Promoting the electroreduction of CO2 with oxygen vacancies on a plasma-activated SnOx/carbon foam monolithic electrode

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Abstract

Monolithic Sn-based catalysts with suitable electronic states and fully exposed active sites are highly desirable to promote the large-scale application of electrochemical conversion of CO2 into formate. Herein, we highlighted a defect engineering strategy to design and synthesize carbon foam supported oxygen vacancy-rich SnOx nanosheets as a promising monolithic electrode for electrocatalytic reduction of CO2 to formate with high activity and selectivity. The obtained monolithic catalyst shows enhanced performance with high formate selectivity (86%) and high formate partial current density (30 mA cm−2). The superior performance is attributed to the rich oxygen vacancies confined in SnOx nanosheets and the three-dimensional interconnected macroporous carbon foam substrate, which causes synergetic effects of higher exposed active sites, faster electron/mass transport, and optimized CO2 adsorption/activation.

Graphical abstract: Promoting the electroreduction of CO2 with oxygen vacancies on a plasma-activated SnOx/carbon foam monolithic electrode

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Supplementary files

Article information


Submitted
11 Nov 2019
Accepted
19 Dec 2019
First published
19 Dec 2019

J. Mater. Chem. A, 2020,8, 1779-1786
Article type
Paper

Promoting the electroreduction of CO2 with oxygen vacancies on a plasma-activated SnOx/carbon foam monolithic electrode

H. Li, N. Xiao, Y. Wang, C. Liu, S. Zhang, H. Zhang, J. Bai, J. Xiao, C. Li, Z. Guo, S. Zhao and J. Qiu, J. Mater. Chem. A, 2020, 8, 1779
DOI: 10.1039/C9TA12401B

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