期刊
APPLIED SURFACE SCIENCE
卷 258, 期 12, 页码 5005-5009出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2012.01.030
关键词
Electrocatalytic; Nanoporous; Carbon dioxide; Dimethyl carbonate; Ionic liquid
类别
资金
- Natural Science Foundation of China [20976197]
A three-dimensional porous nanostructure electrode composed of copper skeletons and platinum shells (NPC-Pt) was prepared by electroless plating for the first time. The electrochemical behavior of this electrode for electrocatalytic reduction CO2 in ionic liquid, 1-butyl-3-methylimidazoliumtetrafluoborate (BMIMBF4), had been studied by cyclic voltammogram and electrochemical impedance spectroscopy with a reduction peak at -2.24 V (vs. Ag) which was more positive 180 mV than that obtained on a pure platinum electrode. The electrolyses experiments were carried out in an undivided cell under mild conditions without any toxic solvents, catalysts and supporting electrolytes, affording the dimethyl carbonate in a good yield (81%). In addition, the current for the CO2 reduction at NPC-Pt electrode was stable, with a higher current density and current efficiency (83%). Moreover, current efficiency remained after reusing it for five times. (C) 2012 Elsevier B. V. All rights reserved.
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