Effect of cadmium and lead adatoms on the reduction kinetics of peroxodisulfate anions at platinized platinum in acid solutions

被引：0
|
作者：
T. G. Nikiforova
O. A. Petrii
机构：
[1] St. Petersburg State University,
[2] Moscow State University,undefined
来源：
Russian Journal of Electrochemistry | 2005年 / 41卷
关键词：
peroxodisulfate; electrocatalysis; adatoms; co-adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The reduction of peroxodisulfate anions on a rotating Pt/Pt disk electrode in solutions of sulfuric and perchloric acids with or without cadmium and lead salts is studied. At Er > 0.2V (RHE) the reduction rate in HClO4 exceeds that in H2SO4, but at Er < 0.2V, the process in HClO4 is strongly inhibited upon approaching Er = 0. Lead adatoms catalyze the process, while cadmium adatoms inhibit it in H2SO4 and accelerate it at Er < 0.2V in HClO4. The results are interpreted by taking account of the specific adsorption of sulfuric-acid anions and their co-adsorption with cadmium cations, as well as the adsorption of peroxodisulfate anions on the Pt surface modified by lead and cadmium ions in perchlorate solutions.
引用
收藏
页码：118 / 121
页数：3
相关论文
共 50 条
12345