Electrolyte distribution around two like-charged rods: their effective attractive interaction and angular dependent charge reversal

The Journal of Chemical Physics
Felipe Jiménez-AngelesMarcelo Lozada-Cassou

Abstract

A simple model for two like-charged parallel rods immersed in an electrolyte solution is considered. We derived the three point extension (TPE) of the hypernetted chain/mean spherical approximation (TPE-HNC/MSA) and Poisson-Boltzmann (TPE-PB) integral equations. We numerically solve these equations and compare them to our results of Monte Carlo (MC) simulations. The effective interaction force, F(T), the charge distribution profiles, rho(el)(x,y), and the angular dependent integrated charge function, P(theta), are calculated for this system. The analysis of F(T) is carried out in terms of the electrostatic and entropic (depletion) contributions, F(E) and F(C). We studied several cases of monovalent and divalent electrolytes, for which the ionic size and concentration are varied. We find good qualitative agreement between TPE-HNC/MSA and MC in all the cases studied. The rod-rod force is found to be attractive when immersed in large size, monovalent or divalent electrolytes. In general, the TPE-PB has poor agreement with the MC. For large monovalent and divalent electrolytes, we find angular dependent charge reversal charge inversion and polarizability. We discuss the intimate relationship between this angular dependent charge re...Continue Reading

References

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Citations

May 10, 2008·The Journal of Chemical Physics·Felipe Jiménez-Angeles, Marcelo Lozada-Cassou
Oct 14, 2011·The Journal of Chemical Physics·Gerardo Odriozola
Feb 9, 2010·The Journal of Chemical Physics·G Iván Guerrero-GarcíaMarcelo Lozada-Cassou
May 9, 2014·The Journal of Chemical Physics·Germán Luque-CaballeroManuel Quesada-Pérez
Apr 1, 2016·The Journal of Physical Chemistry. B·Gerardo Odriozola, Marcelo Lozada-Cassou
Mar 9, 2010·Anais Da Academia Brasileira De Ciências·Eduardo R A LimaFrederico W Tavares
Jul 7, 2007·Physical Chemistry Chemical Physics : PCCP·Eduardo R A LimaEvaristo C Biscaia
Oct 21, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Felipe Jiménez-ÁngelesMarcelo Lozada-Cassou
Aug 16, 2006·Physical Review Letters·G OdriozolaM Lozada-Cassou
Oct 2, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·G Iván Guerrero-GarcíaMartín Chávez-Páez
Feb 16, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Zhenli Xu
Nov 17, 2020·Physical Review Letters·Ankur GuptaHoward A Stone
Mar 24, 2007·Journal of Colloid and Interface Science·G OdriozolaR Hidalgo-Alvarez
Aug 21, 2013·The Journal of Physical Chemistry. B·Héctor M Manzanilla-Granados, Marcelo Lozada-Cassou
Jun 19, 2018·The Journal of Physical Chemistry. B·Alfredo González-CalderónMarcelo Lozada-Cassou
Dec 8, 2006·The Journal of Physical Chemistry. B·J L F AbascalJ C Gil Montoro

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