催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (7): 646-650.

• 研究论文 • 上一篇    下一篇

采用循环伏安与Tafel曲线比较不同阳极的电催化性能

丁海洋,冯玉杰,刘峻峰   

  1. 哈尔滨工业大学环境科学与工程系, 黑龙江哈尔滨 150090
  • 收稿日期:2007-07-25 出版日期:2007-07-25 发布日期:2011-07-25

Comparison of Electrocatalytic Performance of Different Anodes with Cyclic Voltammetry and Tafel Curves

DING Haiyang, FENG Yujie*, LIU Junfeng   

  1. Department of Environmental Science and Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China
  • Received:2007-07-25 Online:2007-07-25 Published:2011-07-25

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1443

被引次数

62

摘要： 采用循环伏安和Tafel曲线两种方法评价了Pt电极、钛基二氧化钌电极(Ti/RuO2)及钛基二氧化锡电极(Ti/SnO2)的电催化氧化性能. 结果表明,在500 mg/L的苯酚溶液中, Pt, Ti/RuO2和Ti/SnO2电极氧化苯酚的峰电位依次为0.93, 0.95和1.40 V(vs Ag/AgCl). Tafel曲线表明,三种电极析氧过电位的顺序依次是Ti/RuO2

关键词: 电催化, 阳极, 循环伏安法, Tafel曲线, 羟基自由基, 苯酚, 降解

Abstract: The eletrocatalytic capability of Pt, Ti base RuO2 (Ti/RuO2), and Ti base SnO2 (Ti/SnO2) electrodes was evaluated with cyclic voltammetry (CV) and Tafel curves. CV curves of the three electrodes were measured in 500 mg/L phenol solution, and their phenol oxidation peak potentials were around 0.93, 0.95, and 1.40 V (vs Ag/AgCl), respectively. The capability of direct electrocatalytic oxidation of phenol lied in the sequence of Pt＜Ti/SnO2＜Ti/RuO2. The Tafel curves were measured in 0.1 mol/L H2SO4 and the results showed that the oxygen evolution overpotentials of the three electrodes increased in the order Ti/RuO2

Key words: electrocatalysis, anode, cyclic voltammetry, Tafel curve, hydroxyl radical, phenol, degradation