Ethanol oxidation at metal-zeolite-modified electrodes in alkaline medium. Part-1: gold-zeolite-modified graphite electrode

被引：9

作者：

Ouf, A. M. A. ^{[1
]}

Elhafeez, Amira M. Abd ^{[1
]}

El-Shafei, A. A. ^{[1
]}

机构：

[1] El Mansoura Univ, Fac Sci, Dept Chem, El Mansura 35516, Egypt

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2008年 / 12卷 / 05期

关键词：

ethanol oxidation; alkaline media; gold; zeolite-modified electrodes;

D O I：

10.1007/s10008-008-0503-9

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Gold-zeolite-modified graphite (AuZG) electrode shows higher catalytic activity for ethanol oxidation in alkaline medium compared with massive gold or gold-modified graphite (Au/G) electrodes. The activity of this electrode depends on the amount of zeolite loaded on the graphite surface and on the soaking time in Au3+ solution. The effects of both scan rate and ethanol concentration on the anodic peak height are indicatives of a diffusion-controlled process. Current decay measurements indicate that the activity of studied electrodes towards poisoning tolerance decreases in the following order: AuZG > Au/G > Au.

引用

页码：601 / 607

页数：7