The dynamic double layer - Part 1 - Theory of a mobile Stern layer
The dynamic double layer - Part 1 - Theory of a mobile Stern layer
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DOI：
10.1039/a803588a
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发表时间：
1998-08-21
期刊：
影响因子：
--
通讯作者：
White, LR
中科院分区：
文献类型：
--
作者：
Mangelsdorf, CS;White, LR
理论发展（C。S. Mangelsdorf和L.R.白色，J. Chem. Sec.，法拉第变换器，1992，88，3567）来计算受到振荡电场的固体、球形胶体颗粒的电泳迁移率。控制离子分布的方程，静电势和流体动力学的颗粒周围举行的流量进行修改，以允许在斯特恩层和随时间变化的颗粒表面电荷密度的离子的横向运动。考虑了两类Stern层吸附等温线：（1）离子吸附到有效表面积上和（2）离子吸附到下面的表面电荷上。平衡模型用于粒子表面电荷密度的变化所产生的离子流入和流出的粒子表面的通量。
The theory developed (C. S. Mangelsdorf and L.R. White, J. Chem. Sec., Faraday Trans., 1992, 88, 3567) to calculate the electrophoretic mobility of a solid, spherical colloidal particle subjected to an oscillating electric field is reviewed and extended. The equations governing the ion distribution, electrostatic potential and hydrodynamic flow held around the particle are modified to allow for the lateral movement of ions within the Stern layer and a time-dependent particle surface charge density. Two classes of Stern-layer adsorption isotherms are considered: (1) Adsorption of ions onto available surface area and (2) Adsorption of ions onto underlying surface charge. An equilibrium model is used for the changes in particle surface charge density arising from the flux of ions into and out of the particle surface.