铂微粒弥散的聚2，5－二甲氧基苯胺膜电极在甲醇电氧化中的催化行为

Electrocatalytic Behavior of Poly(2,5-dimethoxyaniline) Film Electrodes Dispersed by Platinum Microparticles for Electrooxidation of Methanol

研究了电化学方法制备的铂微粒弥散的聚２，５－二甲氧基苯胺膜电极对甲醇电氧化的催化行为以及影响催化活性的主要因素。以ＸＰＳ、ＳＥＭ表征了这种电极材料的表面结构，结果表明，在酸性介质中，该膜电极对甲醇电氧化有高的催化活性和稳定性。

poly(2,5-dimethoxyaniline) film electrodes were prepared by electrochemical method. Metallic platinum microparticles were dispersed into poly(2,5-dimethoxyaniline) matrix by cyclic voltammetry. The electrocatalytic activity of the film electrode was studied for electrooxidation of methanol in protonic acid. It is shown that the incorporation of platinum microparticles into the polymer matrix results in a further ten-fold increase in activity as compared with naked platinum electrodes.The preparation temperature of poly(2,5-dimethoxyaniline) film has a pronounced influence on the electrochemical behaviour. Some important factors which affect electrochemical reactions were discussed.