摘要
苯胺(An)与硫堇(Tn)电化学聚合于石墨电极上,并采用电化学方法沉积Pt颗粒,制备得到Pt/PAni-PTn/石墨电极。通过扫描电子显微镜(SEM)对其形貌进行表征,利用循环伏安法(CV)、计时电流法(CA)考察了Pt/PAni-PTn/石墨电极对甲醇的电催化性能。实验结果表明,Pt颗粒均匀地分散在PAni-PTn复合膜上,PAni-PTn载体更有利Pt纳米颗粒的分散和粒径的减小,Pt/PAni-PTn/石墨电极对甲醇的电催化活性和稳定性明显优于Pt/石墨电极。
Thionine and aniline were polymerized electrochemically at graphite electrode,and Pt particles were deposited by electrochemical method,then Pt/PAni-PTn/graphite electrode was obtained. The morphology of Pt/PAni-PTn/graphite electrode was characterized by scanning electron microscope （SEM）. SEM result shows that Pt particles are dispersed homogeneously on PAni-PTn composite film. The electrocatalytic activity of Pt/PAni-PTn/graphite electrode toward methanol electrooxidation was investigated by cyclic voltammetry （CV） and chronoamperometry （CA）. Experimental results show that PAniPTn as a catalyst support is better for Pt to improve its dispersion and reduce its size,showing larger active surface area. Pt/PAni-PTn/graphite electrode exhibits better electrocatalytic activity and long-term stability than Pt/graphite electrode.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2012年第4期75-80,共6页
Journal of Guangxi Normal University:Natural Science Edition
基金
广西青年科学基金资助项目(桂科青0832025)
关键词
PT
聚硫堇
聚苯胺
甲醇
电催化氧化
Pt
polyaniline
polythionine
methanol
electrocatalytic oxidation
