Effect of Electrochemical Oxidation-Reduction Cycles on Surface Structures and Electrocatalytic Oxygen Reduction Activity of Au Electrodes

被引：5

作者：

Lim, Taejung ^{[1
]}

Kim, Jongwon ^{[1
]}

机构：

[1] Chungbuk Natl Univ, Dept Chem, Cheongju 28644, South Korea

来源：

JOURNAL OF THE KOREAN CHEMICAL SOCIETY-DAEHAN HWAHAK HOE JEE | 2016年 / 60卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

Oxidation-reduction cycle; Surface structure; Oxygen reduction; Electrocatalyst;

D O I：

10.5012/jkcs.2016.60.5.310

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Oxidation-reduction cycling (ORC) procedures are widely used for cleaning nanoparticle surfaces when investigating their electrocatalytic activities. In this work, the effect of ORC on the surface structures and electrocatalytic oxygen reduction activity of Au electrodes is analyzed. Different structural changes and variations in electrocatalysis are observed depending on the initial structure of the Au electrodes, such as flat bulk, nanoporous, nanoplate, or dendritic Au. In particular, dendritic Au structures lost their sharp-edge morphology during the ORC process, resulting in a significant decrease in its electrocatalytic oxygen reduction activity. The results shown in this paper provide an insight into the pretreatment of nanoparticle-based electrodes during investigation of their electrocatalytic activities.

引用

页码：310 / 316

页数：7

共 18 条

[1] Electrochemical behavior of dopamine and ascorbic acid at dendritic Au rod surfaces: Selective detection of dopamine in the presence of high concentration of ascorbic acid [J].