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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2010,Vol.26>> Issue(08)>> 2255-2260     doi: 10.3866/PKU.WHXB20100829         中文摘要
CATALYSIS AND SURFACE STRUCTURE
Electrocatalytic Oxidation of Methanol with Poly Functionalized Multiwalled Carbon Nanotubes Supported Pt Catalysts
ZHAO Yan-Chun1, LAN Huang-Xian1,2, DENG Bin-Bin1, YANG Xiu-Lin1, WANG Feng-Yang1
1. Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China, College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, Guangxi Province, P. R. China;
2. Guangxi Coal Scientifical Institute, Nangni 523003, Guangxi Province, P. R. China
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A novel process to prepare well-dispersed Pt nanoparticles on poly(N-acetylaniline) functionalized multiwalled carbon nanotubes (Pt/PAANI-MWCNTs) using chemical in situ polymerization and reduction is reported. Scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), UV-Vis absorption spectroscopy as well as Raman spectroscopy were used to characterize the catalyst. We found that PAANI can easily immobilize onto the MWCNTs because of a strong interaction with the basal plane of graphite via π-stacking. The Pt particles supported on the PAANI-MWCNTs are uniformly dispersed with a narrow particle size distribution. The electrocatalytic activity of the Pt/PAANI-MWCNTs towards the oxidation of methanol was investigated using cyclic voltammetry and chronoamperometry. The results indicate that the Pt/PAANI-MWCNTs catalysts exhibit higher electrocatalytic activity, better anti-poisoning ability, and good stability during methanol oxidation in comparison to the Pt/MWCNTs for acid oxidation (Pt/AO-MWCNTs).



Keywords: Direct methanol fuel cell   Poly(N-acetylaniline)   Multiwalled carbon nanotubes   Pt catalyst   Electrocatalytic performance  
Received: 2009-12-18 Accepted: 2010-04-28 Publication Date (Web): 2010-06-28
Corresponding Authors: ZHAO Yan-Chun Email: yanchunzh@yahoo.cn

Fund: The project was supported by the Young Science Foundation of Guangxi, China (0728043), Guangxi Ministry of Education Foundation, China ([2006]26) and Innovation Plan in Graduate Education of Guangxi, China (2009106020703M49).

Cite this article: ZHAO Yan-Chun, LAN Huang-Xian, DENG Bin-Bin, TIAN Jian-Niao, YANG Xiu-Lin, WANG Feng-Yang. Electrocatalytic Oxidation of Methanol with Poly Functionalized Multiwalled Carbon Nanotubes Supported Pt Catalysts[J]. Acta Phys. -Chim. Sin., 2010,26 (08): 2255-2260.    doi: 10.3866/PKU.WHXB20100829

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