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Nanoporous copper incorporated platinum composites for electrocatalytic reduction of CO_2 in ionic liquid BMIMBF_4

机译：纳米多孔铜结合铂复合材料用于电催化还原离子液体BMIMBF_4中的CO_2

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摘要

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 CO_2 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 CO_2 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.
机译：首次通过化学镀制备了由铜骨架和铂壳（NPC-Pt）组成的三维多孔纳米结构电极。通过循环伏安法和电化学阻抗谱研究了该电极在离子液体1-丁基-3-甲基咪唑四氟硼酸盐（BMIMBF4）中电催化还原CO_2的电化学行为，其还原峰为-2.24 V（vs. Ag）。比纯铂电极高180 mV的正电压。电解实验是在温和的条件下于无分隔的电池中进行的，没有任何有毒的溶剂，催化剂和支持电解质，从而以良好的收率（81％）得到碳酸二甲酯。另外，在NPC-Pt电极上用于还原CO_2的电流是稳定的，具有较高的电流密度和电流效率（83％）。此外，电流效率在重复使用五次后仍保持不变。

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  • 来源
    《Applied Surface Science》 |2012年第12期|p.5005-5009|共5页
  • 作者

    Qiuju Feng; Suqin Liu; Xuanyun Wang; Ganhua Jin;

  • 作者单位

    College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China,College of Chemistry and Chemical Engineering, Jishou University, Jishou 416000, China;

    College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China,Key Laboratory of Resources Chemistry of Nonferrous Metals, Chinese Ministry of Education, Changsha, Hunan 410083, China;

    College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China;

    College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    electrocatalytic; nanoporous; carbon dioxide; dimethyl carbonate; ionic liquid;

    机译：电催化纳米孔二氧化碳;碳酸二甲酯离子液体;

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