The effect of the system polydispersity on voltammograms of nanoparticles electrooxidation

被引：18
作者：
Brainina, Kh. Z. [1 ,2 ]
Galperin, L. G. [2 ]
Vikulova, E. V. [1 ]
Galperin, A. L. [3 ]
机构：
[1] Ural State Univ Econ, Ekaterinburg 620144, Russia
[2] Ural Fed Univ, Ekaterinburg 620002, Russia
[3] Ural Fed Univ, Ekaterinburg 620083, Russia
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2013年 / 17卷 / 01期
关键词：
Nanoparticles; Polydisperse systems; Electrooxidation; SIZE;
D O I：
10.1007/s10008-012-1852-y
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The paper proposes a mathematical model describing electrooxidation of a polydisperse system of metal nanoparticles from the surface of an indifferent macro-electrode. It is shown that the degree of dispersion of a nanoparticle ensemble affects the shape of oxidation voltammograms. When the degree of dispersion rises and the average size of nanoparticles becomes smaller, the range of oxidation potentials increases. The results of the experimental study of electrooxidation of gold nanoparticles with different degrees of dispersion are given. The particles were localized on the surface of graphite screen-printed electrodes. A good agreement between the parameters of the experimental and calculated voltammograms confirms the correctness of the proposed model.
引用
收藏
页码：43 / 53
页数：11
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