Nanoporous copper incorporated platinum composites for electrocatalytic reduction of CO2 in ionic liquid BMIMBF4
Nanoporous copper incorporated platinum composites for electrocatalytic reduction of CO2 in ionic liquid BMIMBF4
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纳米孔铜掺铂复合材料用于电催化还原离子液体 BMIMBF4 中的 CO2
DOI：
10.1016/j.apsusc.2012.01.030
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发表时间：
2012-04-01
影响因子：
6.7
通讯作者：
Jin, Ganhua
中科院分区：
文献类型：
--
作者：
Feng, Qiuju;Liu, Suqin;Jin, Ganhua
首次采用化学镀法制备了一种由铜骨架和铂壳组成的三维多孔纳米结构电极（NPC-Pt）。用循环伏安法和交流阻抗法研究了该电极在离子液体1-丁基-3-甲基咪唑四氟硼酸盐（BMIMBF 4）中对CO2的电催化还原行为，其还原峰位于-2.24 V（vs. Ag）处，比纯铂电极上的还原峰正180 mV。电解实验在无隔板电解槽中进行，在温和的条件下，不使用任何有毒溶剂、催化剂和支持电解质，以良好的产率（81%）得到碳酸二甲酯。此外，NPC-Pt电极上的CO2还原电流稳定，具有较高的电流密度和电流效率（83%）。重复使用5次后，电流效率仍然保持不变。(C)2012年爱思唯尔B。V.保留所有权利。
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.