Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (07): 1487-1493.doi: 10.3866/PKU.WHXB201304121

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Nano-WO3 Composite Materials as Electro-Catalyst for Methanol Oxidation

ZHOU Yang1,2, LIU Wei-Ming1, HU Xian-Chao1,3, CHU You-Qun1, MA Chun-An1   

  1. 1 State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, International Science & Technology Cooperation Base of Energy Materials and Application, College Of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hiangzhou 310032, P. R. China;
    2 Jiangxi University of Science and Technology, Metallurgical and Chemical Engineering Institute. Ganzhou 341000, Guangxi Province, P. R. China;
    3 Research Center of Analysis and Measurement; Zhejiang University of Technology, Hangzhou, 310032, P. R. China
  • Received:2012-12-17 Revised:2013-04-11 Published:2013-06-14
  • Supported by:

    The project was supported by the International Science & Technology Cooperation Program of China (2010DFB63680), Zhejiang Ministry of Education Foundation, China (Y201225711), and Key Project of Natural Science Foundation of Zhejiang Province, China (Z4100790).

Abstract:

Nano-WO3 modified carbon nanotube supported Pt nanoparticles (Pt/WO3-CNTs) with uniform dimension were prepared by impregnated precipitation method, and Pt nanoparticles were loaded on the surface of WO3-CNTs by means of microwave-assisted glycol method. X-ray powder diffraction (XRD) and transmission electron microscopy (TEM) reveal that the Pt nanoparticles have a face-centered cubic crystal structure and are highly dispersed on the surface of WO3-modified CNTs with a narrow size distribution between 3 and 5 nm. X-ray photoelectron spectroscopy (XPS) shows that more metallic Pt is present on Pt/ WO3-CNTs than on Pt/CNTs catalyst. Compared with the Pt/CNTs catalyst without WO3 modification, the Pt/ WO3-CNTs composite catalyst not only shows relative large electrochemical active surface area, high catalyst activity toward methanol electro-oxidation, but also exhibits very high stability with apparent antiposion tolerance to the incomplete oxidized species during methanol oxidation.

Key words: Direct methanol fuel cell, Carbon nanotube, Tungsten trioxide, Electro-catalysis

MSC2000: 

  • O646