摘要
通过循环伏安法和旋转圆盘电极技术研究了聚 2 ,5 二甲氧基苯胺膜电极 (PDMA/Pt)和聚噻吩膜电极(PTH/Pt)对Sb3 +和Fe (CN) 4-6 离子的电催化行为 .在这两种导电聚合物膜电极上Sb3+和Fe (CN) 4-6离子的氧化还原电流比光铂电极大数倍至数十倍 ,氧化还原峰电位之差也比光铂电极明显地减小 .这些结果表明PDMA/Pt和PTH/Pt膜电极对Sb3+和Fe (CN) 4-6 离子具有良好电催化活性 .在电位扫速较低时膜电极上的电催化过程为扩散控制 ,在较高电位扫速下电极过程受催化反应速度控制 .
The electrocatalytic behaviors of poly(2,5 Dimethoxyaniline)film electrode(PDMA/Pt)and polythiopene film electrode(PTH/Pt)on Sb\+\{3+\} and Fe(CN)\+\{4-\}\-6\ have been investigated by cyclic voltammetry and rotating disk electrode.The redox currents of Sb\+\{3+\} and Fe(CN)\+\{4-\}\-6 at the polymer film electrodes are several or tens times greater than those at bare Pt electrode.The difference between the redox peak potentials at polymer film electrode becomes obviously less than those at the bare Pt electode.The results show that the PDMA/Pt and PTH/Pt film electrodes exhibit good electrocatalytic activity for electrode reaction of Sb\+\{3+\} and Fe(CN)\+\{4-\}\-6.The electrode process at polymer film is a diffusion controlled one at low potential sweep rate and that is kinetic controlled one at high potential sweep rate.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第6期668-673,共6页
Journal of Southwest China Normal University(Natural Science Edition)
基金
重庆市科委攻关项目(97-4886)
关键词
聚-二甲氧基苯胺
聚噻吩
电催化
循环伏安法
poly(2,5-Dimethoxyaniline)
polythiophene
electrocatalysis
cyclic voltammetry
