Comparison of exclusion volume corrections to the Poisson-Boltzmann equation for inhomogeneous electrolytes
Comparison of exclusion volume corrections to the Poisson-Boltzmann equation for inhomogeneous electrolytes
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DOI：
10.1016/j.jcis.2008.11.059
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发表时间：
2009-03-15
影响因子：
9.9
通讯作者：
Outhwaite, C. W.
中科院分区：
文献类型：
--
作者：
Bhuiyan, L. B.;Outhwaite, C. W.
比较排除体积修正的泊松-玻尔兹曼方程的双电层旁边的带电电极。排阻体积项的处理主要基于（i）Langmuir型理论和（ii）Bogoliubov-Born-Green-Yvon积分方程。的朗缪尔型理论进行修改，将最接近的带电表面的距离进行比较。将理论应用于大离子周围的球形双电层和平面双电层。在高表面电荷的空间效应占主导地位时，朗缪尔理论预测在接触和接近接触的对立面的轮廓饱和，而Bogoliubov-Born-Green-Yvon为基础的理论预测分层在同一个配置文件。(C)2008年爱思唯尔公司All rights reserved.
Comparisons are made of exclusion volume corrections to the Poisson-Boltzmann equation for the electric double layer next to a charged electrode. The exclusion volume terms treated are based mainly on (i) Langmuir type theories and (ii) the Bogoliubov-Born-Green-Yvon integral equations. The Langmuir type theories are modified to incorporate a distance of closest approach to the charged surface for comparison purposes. The theories are applied to the spherical electric double layer around a large macroion and the planar electric double layer. At high surface charge steric effects dominate when the Langmuir theories predict saturation in the counterion profile at and near contact, while the Bogoliubov-Born-Green-Yvon based theories predict layering in the same profile. (C) 2008 Elsevier Inc. All rights reserved.