Electrochemical behavior of irreversibly adsorbed Sb on Au electrode

被引：1
|
作者：
Wu Qi-Hui [1 ]
Zhen Chun-Hua [2 ]
Zhou Zhi-You [2 ]
Sun Shi-Gang [2 ]
机构：
[1] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
来源：
ACTA PHYSICO-CHIMICA SINICA | 2008年 / 24卷 / 02期
基金：
中国国家自然科学基金;
关键词：
EQCM; Sb adsorption; Au electrode;
D O I：
10.1016/S1872-1508(08)60010-8
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：
The electrochemical processes of irreversibly adsorbed antimony (Sb-ad) on An electrode were investigated by cyclic voltammetry (CV) and electrochemical quartz crystal microbalance (EQCM). CV data showed that Sb-ad on An electrode yielded oxidation and reduction features at about 0.15 V (vs saturated calomel electrode, SCE). EQCM data indicated that Sb-ad species were stable on Au electrode in the potential region from -0.25 to 0.18 V (vs SCE); the adsorption of Sb inhibited the adsorption of water and anion on An electrode at low electrode potentials. Sb2O3 species was suggested to form on the An electrode at 0.18 V. At a potential, higher than 0.20 V the Sb2O3 species could be further oxidized to Sb(V) oxidation state and then desorbed from Au electrode.
引用
收藏
页码：201 / 204
页数：4
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