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高等学校化学研究 ›› 2011, Vol. 27 ›› Issue (3): 486-489.

• Articles • 上一篇    下一篇

Methanol Oxidation over TiO2-modified Multi-walled Carbon Nanotubes Supported Pt-Mo Electrocatalyst

WANG Xiu-yu1, JIANG Yuan-sheng2, ZHU Hong1 and ZHANG Jing-chang1*   

  1. 1. Institute of Modern Catalyst, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
    2. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
  • 收稿日期:2010-06-13 修回日期:2010-10-23 出版日期:2011-05-25 发布日期:2011-04-29
  • 通讯作者: ZHANG Jing-chang E-mail:zhangjc1@mail.buct.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China(No.20636060) and International Science and Technology Cooperation Program of China(No.2006DFA61240).

Methanol Oxidation over TiO2-modified Multi-walled Carbon Nanotubes Supported Pt-Mo Electrocatalyst

WANG Xiu-yu1, JIANG Yuan-sheng2, ZHU Hong1 and ZHANG Jing-chang1*   

  1. 1. Institute of Modern Catalyst, Beijing University of Chemical Technology, Beijing 100029, P. R. China;
    2. School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
  • Received:2010-06-13 Revised:2010-10-23 Online:2011-05-25 Published:2011-04-29
  • Contact: ZHANG Jing-chang E-mail:zhangjc1@mail.buct.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20636060) and International Science and Technology Cooperation Program of China(No.2006DFA61240).

PDF (PC)

摘要： In order to develop a novel and high-performance catalytic material for direct methanol fuel cells(DMFC), molybdenum oxide as a co-catalyst with Pt on multi-walled carbon nanotubes which were modified by titanium dioxide(denoted as CNTs@TiO2) was investigated. The physicochemical characterizations of the catalysts were carried out via X-ray diffraction(XRD), transmission electron microscopy(TEM) and X-ray photoelectron spectroscopy(XPS). Cyclic voltammetry(CV) showed that the CO-tolerance performance increased in the sequence of Pt/CNTs< Pt/CNTs@TiO2<Pt-Mo/CNTs@TiO2. The improved CO-tolerance performance of the Pt-Mo/CNTs@TiO2 catalyst can be attributed to the combined beneficial effects of highly dispersed Pt nanoparticles on the CNTs, the existence of oxygen holes in the MoO3 layer structure and the oxidation capability of TiO2.

关键词: Methanol oxidation, Direct methanol fuel cell, Molybdenum oxide, Platinum

Abstract: In order to develop a novel and high-performance catalytic material for direct methanol fuel cells(DMFC), molybdenum oxide as a co-catalyst with Pt on multi-walled carbon nanotubes which were modified by titanium dioxide(denoted as CNTs@TiO2) was investigated. The physicochemical characterizations of the catalysts were carried out via X-ray diffraction(XRD), transmission electron microscopy(TEM) and X-ray photoelectron spectroscopy(XPS). Cyclic voltammetry(CV) showed that the CO-tolerance performance increased in the sequence of Pt/CNTs< Pt/CNTs@TiO2<Pt-Mo/CNTs@TiO2. The improved CO-tolerance performance of the Pt-Mo/CNTs@TiO2 catalyst can be attributed to the combined beneficial effects of highly dispersed Pt nanoparticles on the CNTs, the existence of oxygen holes in the MoO3 layer structure and the oxidation capability of TiO2.

Key words: Methanol oxidation, Direct methanol fuel cell, Molybdenum oxide, Platinum