Effect of Cd(II) on electrodeposition of textured PbSe

被引：29

作者：

Streltsov, EA ^{[1
]}

Osipovich, NP ^{[1
]}

Ivashkevich, LS ^{[1
]}

Lyakhov, AS ^{[1
]}

机构：

[1] Belarusian State Univ, Inst Physicochem Problems, Minsk 220050, BELARUS

来源：

ELECTROCHIMICA ACTA | 1999年 / 44卷 / 15期

关键词：

electrodeposition; lead selenide; Cd underpotential deposition; Pb underpotential deposition;

D O I：

10.1016/S0013-4686(98)00395-8

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cathodic electrodeposition of PbSe from acidic aqueous electrolytes containing Se(IV), Pb(II) and Cd(II) has been investigated. It has been found that [100] oriented growth of PbSe: crystallites takes place in some regions of Pb(II) and Cd(II) concentration. Electrosynthesis has been carried out under conditions of underpotential deposition of lead adatoms (Pb-ad) and overpotential deposition of Se. It has been established by cyclic voltammetry that at electrodeposition potential E = -0.30 V (versus Ag/AgCl) underpotential deposition of Cd-ad on Se atoms of the PbSe structure also takes place. Adsorption of Cd-ad and Pb-ad is irreversible due to the formation of the chemical bonds Cd-ad-Se and Pb-ad-Se. The presumption has been made that the mechanism of the Cd(II) effect consists in selective adsorption of Cd-ad on faces of PbSe crystals and inhibition of underpotential deposition of Pb-ad. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2645 / 2652

页数：8

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