广西师范大学学报（自然科学版） ›› 2012, Vol. 30 ›› Issue (4): 75-80.

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铂修饰聚苯胺-聚硫堇复合电极对甲醇的电催化氧化

钟新仙, 王志洪, 银小玲, 王延君, 黄寒星, 冯崎鹏   

  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
  • 收稿日期:2012-03-29 发布日期:2018-11-27
  • 通讯作者: 钟新仙(1973—),女,广西桂林人,广西师范大学教授,博士。E-mail:zhongxx2004@163.com
  • 基金资助:
    广西青年科学基金资助项目(桂科青0832025)

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

ZHONG Xin-xian, WANG Zhi-hong, YIN Xiao-ling, WANG Yan-jun, HUANGHan-xing, FENG Qi-peng   

  1. Key Laboratory for the Chemistry and Molecular Engineering ofMedicinal Resources,Ministry of Education of China;College of Chemistry and Chemical Engineering,Guangxi Normal University,Guilin Guangxi 541004,China
  • Received:2012-03-29 Published:2018-11-27

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。

关键词: Pt, 聚硫堇, 聚苯胺, 甲醇, 电催化氧化

Abstract: 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 showsthat 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 PAni-PTn as a catalyst support is better forPt to improve its dispersion and reduce its size,showing larger active surfacearea.Pt/PAni-PTn/graphite electrode exhibits better electrocatalytic activityand long-term stability than Pt/graphite electrode.

Key words: Pt, polyaniline, polythionine, methanol, electrocatalytic oxidation

中图分类号: 

  • O614
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