High catalytic activity of nanostructured Pd thin films electrochemically deposited on polycrystalline Pt and Au substrates towards electro-oxidation of methanol

被引：81

作者：

Zhang, Jintao

Huang, Minghu

Ma, Houyi ^{[1
]}

Tian, Fang

Pan, Wei

Chen, Shenhao

机构：

[1] Shandong Univ, Dept Chem, Jinan 250100, Peoples R China

[2] Shandong Univ, State Educ Minist, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China

[3] Harbin Inst Technol, Sch Ocean, Weihai 264209, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 06期

基金：

中国国家自然科学基金;

关键词：

palladium; catalytic activity; cyclic voltammogram (CV); methanol; electro-oxidation;

D O I：

10.1016/j.elecom.2007.01.038

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanostructured Pd thin films are directly formed on polycrystalline Pt and Au substrates in the absence of hard and soft templates by using a cyclic potential sweep technique, which is confirmed by both SEM observation and their unusual cyclic voltammetric characteristics in H2SO4 solution. Interestingly, the bimetallic electrodes obtained after the deposition of ultrathin Pd films onto Pt and Au substrates display much higher catalytic activity towards the electro-oxidation of methanol than the bulk Pt electrode. Besides, it is found that the foreign metal substrate has great influence on the electro-catalytic behavior of the Pd films. (c) 2007 Elsevier B.V. All rights reserved.

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收藏

页码：1298 / 1304

页数：7

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