Non-Debye screening in ionic solutions: Generalization of the modified mean spherical approximation

被引:12
作者
Varela, LM
Ruso, JM
Garcia, M
Mosquera, V [1 ]
机构
[1] Univ Santiago de Compostela, Dept Fis Mat Condensada, Grp Fis Coloides & Polimeros, E-15706 Santiago De Compostela, Spain
[2] Univ Santiago de Compostela, Dept Fis Aplicada, Grp Fis Coloides & Polimeros, E-15706 Santiago De Compostela, Spain
关键词
D O I
10.1063/1.1323510
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
In this paper screening phenomena in general binary ionic solutions are analyzed from an Ornstein-Zernike point of view. The modified mean spherical approximation (MMSA) closure relation for the direct correlation function [Varela , J. Chem. Phys. 109, 1930 (1998)] is generalized in order to allow the presence of several species in solution. This generalized approximation (GMMSA) explicitly accounts for specific interactions between ionic species and is seen to allow the prediction of the hypernetted chain calculated decay length of 1:z(z=1,...,4) electrolyte solutions, in terms of a mean interaction parameter. Particularly, for 1:1 electrolyte solutions the results of the GMMSA for the effective decay length are seen to recover the original MMSA ones, and they are compared to all the theoretical results which exist in literature. (C) 2000 American Institute of Physics. [S0021-9606(00)51546-3].
引用
收藏
页码:10174 / 10179
页数:6
相关论文
共 30 条
[1]   INTERACTIONS BETWEEN ELECTRO-NEUTRAL SURFACES BEARING MOBILE CHARGES [J].
ATTARD, P ;
KJELLANDER, R ;
MITCHELL, DJ .
CHEMICAL PHYSICS LETTERS, 1987, 139 (02) :219-224
[2]   ELECTROSTATIC FLUCTUATION INTERACTIONS BETWEEN NEUTRAL SURFACES WITH ADSORBED, MOBILE IONS OR DIPOLES [J].
ATTARD, P ;
KJELLANDER, R ;
MITCHELL, DJ ;
JONSSON, B .
JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (03) :1664-1680
[3]   ASYMPTOTIC ANALYSIS OF PRIMITIVE MODEL ELECTROLYTES AND THE ELECTRICAL DOUBLE-LAYER [J].
ATTARD, P .
PHYSICAL REVIEW E, 1993, 48 (05) :3604-3621
[4]   Structural aspects of the electrical resistivity of binary alloys [J].
Bhatia, A. B. ;
Thornton, D. E. .
PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (08) :3004-3012
[5]   MEAN SPHERICAL MODEL FOR ASYMMETRIC ELECTROLYTES .1. METHOD OF SOLUTION [J].
BLUM, L .
MOLECULAR PHYSICS, 1975, 30 (05) :1529-1535
[6]   MEAN SPHERICAL MODEL FOR ASYMMETRIC ELECTROLYTES .2. THERMODYNAMIC PROPERTIES AND PAIR CORRELATION-FUNCTION [J].
BLUM, L ;
HOYE, JS .
JOURNAL OF PHYSICAL CHEMISTRY, 1977, 81 (13) :1311-1317
[7]  
Debye P, 1923, PHYS Z, V24, P185
[8]   THE DECAY OF CORRELATIONS IN IONIC FLUIDS [J].
DECARVALHO, RJFL ;
EVANS, R .
MOLECULAR PHYSICS, 1994, 83 (04) :619-654
[9]   DRESSED ION THEORY FOR BULK SYMMETRICAL ELECTROLYTES IN THE RESTRICTED PRIMITIVE MODEL [J].
ENNIS, J ;
KJELLANDER, R ;
MITCHELL, DJ .
JOURNAL OF CHEMICAL PHYSICS, 1995, 102 (02) :975-991
[10]  
Gouy M., 1910, J. Phys. Theor. Appl, V9, P457, DOI DOI 10.1051/JPHYSTAP:019100090045700