期刊
APPLIED SURFACE SCIENCE
卷 508, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2019.145221
关键词
CO2; Electrochemical reduction; Mesoporous structure; Sn/SnOx electrode; Formate
类别
资金
- National Natural Science Foundation of China [21572070]
- National Key Research and Development Program of China [2016YFA0602900]
The Sn/SnOx electrode catalyst with mesoporous structures was successfully prepared by using an anodic oxidation method. The surface of the Sn/SnOx electrocatalyst has well-ordered nanopores with around 50 nm in diameter, and the tin oxide layer formed on the surface belongs to amorphous structure. The experimental results indicate that the prepared mesoporous Sn/SnOx electrode catalyst has an excellent catalytic activity for the electrocatalytic reduction of CO2 to formate, with a high Faradaic efficiency (89.6%) at -1.2 V vs. RHE, which is due to its mesoporous structure having a high specific surface area and surface tin oxide layer. Moreover, the mesoporous Sn/SnOx electrode could keep stable catalytic activity during a 12-hour period of the electrolysis.
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