COUNTERION BINDING IN THE SOLVATION SHELL OF IONIC COLLOIDS IN AQUEOUS-SOLUTION

被引：4

作者：

BRATKO, D ^{[1
]}

HENDERSON, D ^{[1
]}

机构：

[1] UNIV UTAH, DEPT CHEM, SALT LAKE CITY, UT 84112 USA

来源：

ELECTROCHIMICA ACTA | 1991年 / 36卷 / 11-12期

关键词：

COLLOIDS; DOUBLE LAYER; ION BINDING; STRUCTURE FACTORS; INTERPROTEIN CORRELATIONS;

D O I：

10.1016/0013-4686(91)85042-6

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Spatial correlations in ionic colloidal solutions are studied within the hypernetted chain approximation, applied to the charged hard sphere model for highly asymmetric electrolyte solutions, and modified to account for stronger binding of the counterions within the solvation shell of the polyion. This enhanced ion-colloid attraction gives rise to stronger screening of the coulombic repulsion among the polyions. The reduced order in the solution conforms with experimental observations. In extreme cases, a partial association of the colloidal particles linked by the common counterions is observed.

引用

页码：1757 / 1760

页数：4

共 35 条

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