Direct oxidation of methanol on self-supported nanoporous gold film electrodes with high catalytic activity and stability

被引：108

作者：

Yu, Chuanfang ^{[1
]}

Jia, Falong ^{[1
]}

Ai, Zhihui ^{[1
]}

Zhang, Lizhi ^{[1
]}

机构：

[1] Cent China Normal Univ, Minist Educ, Coll Chem, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 25期

关键词：

D O I：

10.1021/cm701939v

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A study was conducted, to demonstrate that a self-supported nanoporous gold film (NPGF) can be used for highly effective direct electro-oxidation of methanol in alkaline solution at room temperature. The self-supported NPGF electrode was fabricated through multicyclic electrochemical alloying, or dealloying of a polished gold electrode in an electrolyte composed of ZnCl 2 and benzyl alcohol (BA). It was found that the activity of NPGF was about 400 times more than that of the smooth gold electrode without decreasing after 100 cycles of activity test. Field-emission scanning electron microscopic (FESEM) images of the gold electrode after 30 cycles of alloying and dealloying in ZnCl2/BA electrolyte at 120°C revealed that the gold electrode surface had turned black. A well-defined three-dimensional nanoporous structure was also observed on the electrodes.

引用

页码：6065 / 6067

页数：3

共 22 条

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