高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (5): 660.

• 论文 • 上一篇    下一篇

亚硫酸根在化学修饰电极上催化氧化的动力学表征

陈晓明, 毕艳凤, 何佩鑫   

  1. 复旦大学化学系, 200433
  • 收稿日期:1989-10-23 出版日期:1991-05-24 发布日期:1991-05-24
  • 通讯作者: 何佩鑫
  • 基金资助:

    国家自然科学基金

Kinetic Characterization of Electrocatalytic Oxidation of Sulfite at Chemically Modified Electrodes

Chen Xiao-ming, Bi Yan-feng, He Pei-xin   

  1. Department of Chemistry, Fudan University, Shanghai, 200433
  • Received:1989-10-23 Online:1991-05-24 Published:1991-05-24

PDF (PC)

被引次数

2

摘要： 本文采用Saveant-Andrieux电催化反应动力学理论,表征了SO32-在经Nation-Os(bpy)32+/3+修饰后的玻碳电极上的电催化体系的动力学行为,用动力学区域图确定体系的动力学类型.当反应物浓度从8×10-5变至1.28×10-3(mol/L)时,体系始终遵循"SR"的动力学行为。

关键词: 修饰电极, 电催化氧化, 动力学行为

Abstract: The oxidation of sulfite at glassy carbon electrodes is sluggish, but the reaction can be catalyzed by Nafion-Os(bpy)32+/3+modified electrode. Saveant-Andrieux theory is used as the diagnostic tool to characterize the dynamics of the catalysis. The substrate concentration and the rotation rate of electrodes are varied systematically in order to evaluate four characteristic currents quantitatively. The kinetic zone diagram is used to assign the kinetic type of the system. As the concentration of the reac-tant varies form 8× 10-5to 1. 28 ×10-3(mol/L), the "SR" dynamic behavior remains. An experimental verification for the theoretical model is also provided.

Key words: Modified electrode, Electrocatalytic oxidation, Dynamic behaviour

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