Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (09): 1041-1046. Previous Articles     Next Articles

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ITO表面Pt颗粒的电化学沉积制备及其电催化氧化氨研究

邓晓辉,仵亚婷,何美凤,但承益,陈钰娟,邓意达,蒋登辉,钟澄*   

  1. (上海交通大学金属基复合材料国家重点实验室 上海 200240)
  • 收稿日期:2010-09-12 修回日期:2010-11-17 出版日期:2011-05-14 发布日期:2010-12-02
  • 通讯作者: 钟澄 E-mail:chengz@sjtu.edu.cn
  • 基金资助:

    国家自然科学基金项目;上海交通大学创新实践计划

Electrochemical Deposition of Pt Particles on Indium Tin Oxide Electrode and Their Electrocatalytic Applications in Ammonia Oxidation

DENG Xiao-Hui, WU Ya-Ting, HE Mei-Feng, DAN Cheng-Yi, CHEN Yu-Juan, DENG Yi-Da, JIANG Deng-Hui, ZHONG Cheng   

  1. (State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240)
  • Received:2010-09-12 Revised:2010-11-17 Online:2011-05-14 Published:2010-12-02
  • Contact: Cheng ZHONG E-mail:chengz@sjtu.edu.cn

An indium tin oxide (ITO) electrode was used as the substrate for supporting Pt particles prepared by potentiostatic electrodeposition. Scanning electron microscope (SEM), energy dispersive X-ray fluorescence spectrometry (EDS) and X-ray diffraction (XRD) analysis were employed to characterize the morphology, the composition and the structure of the deposited Pt particles. The electrocatalytic performance towards ammonia oxidation for the Pt/ITO electrode and its active surface area were investigated by the cyclic voltammetric (CV) and electrochemical active surface area (EASA) measurements. The results showed that sub-micron size Pt particles with good dispersion on ITO can be successfully obtained by electrodeposition method. The Pt/ITO electrode (with only 0.12 mg•cm-2 of Pt loading) has much better catalytic activity than that of the pure Pt electrode towards ammonia oxidation. This can be attributed to the small size and the good dispersion of the Pt particles which contribute to its high electrochemical active surface area.

Key words: indium tin oxide (ITO), Pt particles, electrochemical deposition, ammonia, electrocatalytic oxidation

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