Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 8, Issue 4, Pages 1779-1786Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta12401b
Keywords
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Funding
- National Natural Science Foundation of China (NSFC) [U1508201]
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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.
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