摘要
本文研究了电化学方法制备的聚2,5-二甲氧基苯胺(P25DMAn)薄膜电极对水溶液中的氢醌的电催化作用,以及影响催化作用的主要因素.研究结果表明,在酸性较强的水溶液中,在较宽的浓度范围内(氢醌的浓度为1×10^(-3)～1×10^(-2)mol/L)均有很好的电催化作用。催化电流与氢醌浓度呈良好的线性关系.用旋转园盘电极研究了催化过程动力学,求出了催化反应的动力学参数。这种修饰电极有很好的化学稳定性和电化学稳定性,是一种很有应用前景的修饰电极。
Poly (2, 5-dimethoxyaniline) films were synthesized with the method of elec-tropolymerization. In strong acidic solution, the redox reaction of quinone-hydroquinone could well be catalyzed by poly(2,5-dimethoxyaniline) film electrode in a wide range of hy-droquinone concentration. Some important factors which affect electrocatalytic reaction of quinone-hydroquinone at poly(2,5-dimethoxyaniline) film electrodes were discussed. The catalytic kinetics was investigated by rotating disc electrodes coated with poly (2,5-dimethoxyaniline) film. Kinetics parameters of the catalytic reaction were evaluated. The catalytic limiting currents were proportional to the concentrations of hydroquinone in the range of l×10-2-l×10-5mol/L, and poly(2,5-dimethoxyaniline) film electrodes were very stable.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1994年第9期951-954,共4页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金
关键词
P25DMAN
薄膜电极
氢醌
电催化
Poly (2, 5-dimethoxyaniline), Electrocatalytic reaction, Conducting polymer, Hydroquinone.
