高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

Pt/巯基乙酸/玻碳电极的表面形貌与电催化性能

于志辉1, 谢佳1, 夏定国1, 于春洋1,2   

    1. 北京工业大学环境与能源工程学院, 北京 100022;
    2. 北京联合大学生物化学工程学院, 北京 100023
  • 收稿日期:2006-12-28 修回日期:1900-01-01 出版日期:2007-10-10 发布日期:2007-10-10
  • 通讯作者: 夏定国

Surface Morphology and Electrocatalytic Property of Pt /Thioglycolic Acid/GC Electrodes

YU Zhi-Hui1, XIE Jia1, XIA Ding-Guo1*, YU Chun-Yang1,2   

    1. College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022, China;
    2. College of Biochemical Engineering, Beijing Union University, Beijing 100023, China
  • Received:2006-12-28 Revised:1900-01-01 Online:2007-10-10 Published:2007-10-10
  • Contact: XIA Ding-Guo

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被引次数

2

摘要： 以巯基乙酸为偶联层在玻碳(GC)电极上组装 Pt纳米颗粒, 得到Pt /巯基乙酸/GC电极, 利用扫描电镜(SEM)和循环伏安法(CV)研究了不同条件下复合电极的表面形貌和电化学性能. 研究结果表明, 巯基乙酸在GC电极表面具有特性吸附, 形成了具有一定致密性的吸附层. 在0.5 mol/L H2SO4+1.0 mol/L CH3OH溶液中, 组装19 h的复合电极对甲醇氧化表现出较好的电催化性能.

关键词: 自组装, 巯基乙酸, Pt纳米粒子, 玻碳电极

Abstract: The Pt/thioglycolic acid/GC composite electrode was prepared by self-assembling Pt nanoparticles on GC modified with thioglycolic acid. The composite electrode was characterized by SEM and cyclic voltograme method. The results show that the compact absorbing layer was formed because of thioglycolic characteristic absorb on the surface of GC electrode. The composite electrode, which had been self-assembled for 19 h, in the 2.5 mmol/L H2PtCl6 and 1.0 mmol/L PVP mixture solution, gave a good electrocatalytic oxidation of methanol in acidic system.

Key words: Self-assemble, Thioglycolic acid, Pt nanoparticles, GC electrode

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