Electrokinetic properties of monovalent electrolytes confined in charged nanopores: effect of geometry and ionic short-range correlations.
The electrokinetic properties (such as capillary conductance, electroviscosity, and the streaming potential) are obtained for a restricted primitive model electrolyte confined in a slitlike nanopore made up of two infinite parallel plates and in a cylindrical cavity of infinite extension. The hypernetted chain/mean spherical approximation (HNC/MSA) is used to obtain the equilibrium ionic concentration profiles inside the pores, which in turn are used to calculate the electrokinetic properties via linear hydrodynamic equations. Our results are compared with those obtained via the classical Poisson-Boltzmann (PB) theory. Important quantitative and qualitative effects, attributed to geometry and to the proper consideration of short-range correlations by HNC/MSA, are discussed.
Sánchez-Arellano
Enrique
E
Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa, Apartado Postal 55-334, 09340 México, D.F., México.
Olivares
Wilmer
W
Lozada-Cassou
Marcelo
M
Jiménez-Angeles
Felipe
F