Dispersion of silver particles in aqueous solutions visualized by polarography/voltammetry

被引：6
|
作者：
Korshunov, Andrey [2 ]
Heyrovsky, Michael [1 ]
机构：
[1] Acad Sci Czech Republic, J Heyrovsky Inst Phys Chem, CR-18223 Prague, Czech Republic
[2] Tomsk Polytech Univ, Dept Gen & Inorgan Chem, Tomsk 634050, Russia
来源：
ELECTROCHIMICA ACTA | 2009年 / 54卷 / 26期
关键词：
Silver ions; Silver particles; Dropping mercury electrode; Hanging mercury drop electrode; Particulate electrode reaction; Time course of silver particles agglomeration; RAMAN; VOLTAMMETRY; SURFACE;
D O I：
10.1016/j.electacta.2009.05.084
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The State of silver particles in aqueous dispersions and the course of their coagulation can be followed on voltammetric curves recorded with hanging mercury drop electrode. Sharp irregular cathodic current peaks produced by partial electroreduction of the species adsorbed on the surface of silver particles during their fortuitous impingements upon the electrode surface appear in time sequence on the curves. A change in the electrochemical behavior of silver sols in the time course of particles aggregation and growth was interpreted in agreement with the data of UV-vis spectroscopy and electron microscopy observations. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：6264 / 6268
页数：5
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