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
收藏
页码：601 / 607
页数：7
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