Interaction of sulfate ions with monocrystalline silver electrodes

被引：4

作者：

Sobkowski, J ^{[1
]}

Smolinski, S ^{[1
]}

Zelenay, P ^{[1
]}

机构：

[1] Univ Warsaw, Dept Chem, PL-02089 Warsaw, Poland

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 1998年 / 134卷 / 1-2期

关键词：

adsorption isotherms; electrosorption; radiometry; silver monocrystals; sulfate ions;

D O I：

10.1016/S0927-7757(97)00311-7

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 phenomenon of sulfate ion adsorption on monocrystalline silver surfaces was investigated quantitatively. The adsorption of sulfate from 0.1M HClO4 was found reversible with respect to the potential and also to the bulk concentration of sulfate. The adsorption isotherms as well as the surface concentration/potential dependences were determined radiometrically. The surface concentration sequence was found to be Ag(111) approximate to Ag(110) > Ag(100). The thermodynamic parameters of adsorption were calculated by fitting experimental data to virial, Frumkin and Henry adsorption models. The sequence of sulfate adsorption on three basal silver planes from 0.1 M NaClO4, was found to be quite different to that from an acidic supporting electrolyte, in agreement with the sequence of zero-charge potentials for the silver surfaces investigated. (C) 1998 Elsevier Science B.V.

引用

页码：39 / 45

页数：7

共 19 条

[1] FORM OF ADSORPTION ISOTHERMS FOR SUBSTITUTIONAL ADSORPTION OF MOLECULES OF DIFFERENT SIZES [J].