The influence of cathodic pretreatment on the kinetics of hydroxide ion oxidation on polycrystalline gold electrode

被引：28
作者：
Abu-Rabi, Andjela
Jasin, Danijela
Mentus, Slavko
机构：
[1] Univ Belgrade, Fac Phys Chem, Belgrade 11000, Serbia
[2] Univ Belgrade, Tech Sch Zrenjanin, Belgrade 11000, Serbia
[3] Inst Chem Met & Technol, Catalysis Ctr, Belgrade 11000, Serbia
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2007年 / 600卷 / 02期
关键词：
gold electrode; gold oxide; hydroxide ion oxidation; rotating disc electrode; voltammetry;
D O I：
10.1016/j.jelechem.2006.09.009
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The electrochemical oxidation of the hydroxide ion was studied on a gold rotating disc electrode (RDE), in aqueous NaOH solutions in the presence of lithium perchlorate as a supporting electrolyte. By potentiodynamic polarization within the limits -1.6 V and +1.6 V vs. SCE, it was demonstrated that the overvoltage of the OH- ion oxidation reaction may be significantly reduced with a 5 min long delay at the vertex cathodic potential of -1.6 V. This finding was explained in terms of the type of gold oxide formed on the gold surface under different experimental conditions. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：364 / 368
页数：5
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