Electrooxidation of methanol on PtMyOx (M = Sn, Mo, Os or W) electrodes

被引：60
作者：
de Oliveira, MB [1 ]
Profeti, LPR [1 ]
Olivi, P [1 ]
机构：
[1] Univ Sao Paulo, FFCLRP, Dept Quim, BR-14040901 Ribeirao Preto, SP, Brazil
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2005年 / 7卷 / 07期
基金：
巴西圣保罗研究基金会;
关键词：
methanol oxidation; mixed oxide electrodes; tin; molybdenum; osmium; tungsten; platinum;
D O I：
10.1016/j.elecom.2005.04.024
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this paper, we have studied the electrooxidation of methanol on PtMyOx (M = Sn, Mo, Os or W) electrodes prepared by the decomposition of polymeric precursors. The PtMyOx materials were prepared on Ti plates and were characterized by SEM and EDX. The electrodes presented compositions very similar to the nominal ones, except for the electrodes containing Os, which presented high Os loss. The electrodes catalytic activity in the electrooxidation of methanol was studied by cyclic voltammetry and chronoamperometry. The electrodes containing tin in their compositions presented the highest electroactivity. The possible mechanisms involved in activity enhancement are discussed. (C) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：703 / 709
页数：7
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