期刊
MATERIALS RESEARCH BULLETIN
卷 48, 期 3, 页码 1099-1104出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2012.11.112
关键词
Composites; Chemical synthesis; Electrochemical properties
资金
- National Natural Science Foundation of China [51073114, 20933007, 21173261, 51073074, 50963002]
- One Hundred Talents program of Chinese Academy of Sciences [1029471301]
- Western Light Joint Scholar Program of Chinese Academy of Sciences [LHXZ201001]
- Opening Project of Xinjiang Key Laboratory of Electronic Information Materials and Devices [XJYS0901-2010-01]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
A ternary composite catalyst of Pt-WO3-TiO2 has been successfully prepared by a chemical method. The prepared composite was systematically characterized by UV-vis diffuse reflectance absorption spectra (DRS), scanning electron inicroscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM). The electrocatalytic properties of Pt-WO3-TiO2 for methanol oxidation in an alkaline medium were evaluated by the cyclic voltammetry (CV) and chronoamperometry (CA) with or without visible light irradiation. Compared with the pure TiO2, the introduction of WO3 extends its absorption edge to visible light region. Under visible light illumination, the Pt-WO3-TiO2 composite catalyst exhibits higher electrocatalytic activity toward methanol oxidation in comparison with its counterpart, the pure Pt-TiO2 catalyst. (C) 2012 Elsevier Ltd. All rights reserved.
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