Generalized Poisson-Boltzmann Equation Taking into Account Ionic Interaction and Steric Effects

被引：15

作者：

Liu Xin-Min ^{[1
]}

Li Hang ^{[1
]}

Li Rui ^{[1
]}

Tian Rui ^{[1
]}

Xu Chen-Yang ^{[1
]}

机构：

[1] Southwest Univ, Coll Resources & Environm, Chongqing 400715, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2012年 / 58卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Ionic interaction; ion size; Poisson-Boltzmann equation; ELECTRIC DOUBLE-LAYER; ELECTROLYTE; DIFFUSION; IMAGES;

D O I：

10.1088/0253-6102/58/3/20

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Generalized Poisson-Boltzmann equation which takes into account both ionic interaction in bulk solution and steric effects of adsorbed ions has been suggested. We found that, for inorganic cations adsorption on negatively charged surface, the steric effect is not significant for surface charge density < 0.0032 C/dm(2), while the ionic interaction is an important effect for electrolyte concentration > 0.15 mol/l in bulk solution. We conclude that for most actual cases the original PB equation can give reliable result in describing inorganic cation adsorption.

引用

页码：437 / 440

页数：4

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