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Citation: FENG Xiaojuan, SHI Yanlong, WANG Yongsheng, MIN Shixiong, HU Zhongai. Preparation of Pt-CeO₂/Polyaniline/Polysulfone Composite Film Electrode and Their Electrocatalytic Activity for Methanol Oxidation[J]. Chinese Journal of Applied Chemistry, ;2011, 28(3): 302-307. doi: 10.3724/SP.J.1095.2011.00311 shu

Preparation of Pt-CeO₂/Polyaniline/Polysulfone Composite Film Electrode and Their Electrocatalytic Activity for Methanol Oxidation

1.
a Department of Chemistry, Hexi University, Zhangye 734000;
2.
b College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou

Corresponding author: FENG Xiaojuan,
Received Date: 26 May 2010
Available Online: 28 July 2010
Fund Project: 河西学院西部资源环境化学重点实验室基金资助项目(XZ0706) (XZ0706)

The polyaniline/polysulfone (PAN/PSF) composite film modified electrodes doped with cerium oxide were prepared by electropolymerization, and then Pt particles were deposited into this composite film to obtain the Pt modified cerium oxide/polyaniline/polysulfone (Pt-CeO₂/PAN/PSF) electrodes. Their morphology and chemical component were characterized by field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectroscopy (EDS), respectively. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) techniques were applied to investigate the electrocatalytic activity of the electrode for methanol oxidation. The results show that the composite film has a bi-layer structure with asymmetrical pores, and platinum and cerium oxide particles are uniformly dispersed in the modified film electrodes. The average size of particles is about 80 nm. The electrode holds higher electrocatalytic activity and better stability for methanol oxidation on the condition of mass ratio between CeO₂ and Pt is equal to 7%.
- Pt-CeO₂/PAN/PSF composite film electrode,
- electrocatalytic oxidation,
- methnol
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通讯作者: 陈斌, bchen63@163.com

Preparation of Pt-CeO₂/Polyaniline/Polysulfone Composite Film Electrode and Their Electrocatalytic Activity for Methanol Oxidation