A unified perspective on preferential solvation and adsorption based on inhomogeneous solvation theory

Seishi Shimizu and Nobuyuki Matubayasi

Physica A: Statistical Mechanics and its Applications, 2018, vol. 492, issue C, 1988-1996

Abstract: How cosolvents affects solvation has been revealed through the independent determination of solute-solvent and solute-cosolvent interactions guaranteed by the phase rule. Based on the first principles of inhomogeneous solvation theory, we present here a general matrix theory encompassing both preferential solvation and surface adsorption. The central role of the stability conditions, that govern how many excess numbers (surface excesses) are independently determinable, have been clarified from the first principles. The advantage of the inhomogeneous approach has been demonstrated to be in its ease in treating solvation and adsorption in a unified manner, while its disadvantage, for example in membrane dialysis experiments, can be overcome by the inhomogeneous–homogeneous conversion.

Keywords: Classical statistical thermodynamics; Fluctuation solution theory; Inhomogeneous solvation theory; Preferential solvation; Gibbs adsorption isotherm (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:492:y:2018:i:c:p:1988-1996

DOI: 10.1016/j.physa.2017.11.113

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