Electrocatalytic oxidation of methanol and ethanol at carbon ceramic electrode modified with platinum nanoparticles

被引：110

作者：

Razmi, H. ^{[1
]}

Habibi, Es. ^{[1
]}

Heidari, H. ^{[1
]}

机构：

[1] Azarbaijan Univ Tarbiat Moallem, Electrochem Res Lab, Fac Sci, Tabriz, Iran

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 28期

关键词：

carbon ceramic electrode; sol-gel; methanol; ethanol; platinum particles; fuel cells; electrooxidation;

D O I：

10.1016/j.electacta.2008.06.033

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The use of carbon ceramic electrode (CCE) modified with platinum particles was studied for the electrocatalytic oxidation of methanol and ethanol by cyclic voltammetry, and chronoamperometry. After preparation of a carbon ceramic as an electrode matrix by sol-gel technique, its surface was potentiostatically coated with Pt nanoparticles at -0.2 V vs. SCE in an aqueous solution of 0.1 M H2SO4 containing 0.002 M H2PtCl6. The electrocatalyst was characterized by XRD, SEM and cyclic voltammetry. The effective parameters on electrocatalytic oxidation of the alcohols, i.e. the amount Pt loadings, medium temperature and working potential limit in anodic direction were investigated and the results were discussed. This modified electrode showed an enhanced current density over the other Pt-modified electrodes making it more attractive for fuel cell applications. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：8178 / 8185

页数：8

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