铂修饰聚苯胺-聚硫堇复合电极对甲醇的电催化氧化  

Electrocatalytic Performance of Platinum-modified PAni/PTn Composite Electrode toward Methanol Oxidation

作　　者：钟新仙[1] 王志洪[1] 银小玲[1] 王延君[1] 黄寒星[1] 冯崎鹏[1] 

机构地区：[1]广西师范大学化学化工学院,药用资源化学与药物分子工程教育部重点实验室,广西桂林541004

出　　处：《广西师范大学学报（自然科学版）》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)

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.

关 键 词：PT 聚硫堇 聚苯胺 甲醇 电催化氧化 

分 类 号：O614[理学—无机化学]