催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (11): 1073-1075.

• 研究快讯 •    下一篇

一种提高铂电催化氧化甲酸性能的简单方法

李美超, 汪伍洋, 马淳安   

  1. 浙江工业大学化学工程与材料学院, 浙江工业大学分析测试中心, 绿色化学合成技术国家重点实验室培育基地, 浙江杭州 310032
  • 收稿日期:2009-11-25 出版日期:2009-11-25 发布日期:2013-07-17

A Simple Method to Improve Electrocatalytic Activity of Pt for Formic Acid Oxidation

LI Meichao*, WANG Wuyang, MA Chun’an   

  1. College of Chemical Engineering and Materials Science, Research Center of Analysis and Measurement, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, China
  • Received:2009-11-25 Online:2009-11-25 Published:2013-07-17

PDF

1258

被引次数

12

摘要： 在离子液体 1-乙基咪唑三氟乙酸盐 (HEImTfa) 中, 采用循环伏安法在铂电极表面修饰聚吡咯 (PPy), 制得 PPy-HEImTfa/Pt, 并研究了其对甲酸的电催化氧化性能. 与相同条件下的铂基底电极相比, PPy-HEImTfa/Pt 对甲酸的电催化氧化性能有很大的提高. 原位红外光谱表明, PPy-HEImTfa 能降低中间体 CO 等对铂电极的毒化作用, 促进甲酸直接氧化生成 CO2.

关键词: 1-乙基咪唑三氟乙酸盐, 聚吡咯, 铂, 甲酸, 电催化氧化

Abstract: A platinum electrode was modified with polypyrrole in the ionic liquid 1-ethylimidazolium trifluoroacetate (PPy-HEImTfa/Pt) using cyclic voltammetry, and its electrocatalytic performance for the oxidation of formic acid was tested. Compared to the Pt electrode, the electrocatalytic activity of PPy-HEImTfa/Pt for the oxidation of formic acid was greatly improved. The complete oxidation of formic acid to CO2 was followed by in situ FT-IR, which showed that with PPy-HEImTfa, formic acid oxidation occurred by a direct pathway mechanism and CO poisoning was much decreased.

Key words: 1-ethylimidazolium trifluoroacetate, polypyrrole, platinum, formic acid, electrocatalytic oxidation