Journal
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
Volume 16, Issue 6, Pages 542-550Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.cocis.2011.04.012
Keywords
Electrostatic interactions; Ion specific interactions; Poisson-Boltzmann theory; Forces between charged surfaces; Hydration forces
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Funding
- Slovenian Research Agency [P1-0055, J1-0908]
- Isreali-Slovene joint research project
- Israel Science Foundation (ISF) [231/08]
- US-Israel Binational Science Foundation (BSF) [2006/055]
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In aqueous solutions, dissolved ions interact strongly with the surrounding water and surfaces, thereby modifying solution properties in an ion-specific manner. These ion-hydration interactions can be accounted for theoretically on a mean-field level by including phenomenological terms in the free energy that correspond to the most dominant ion-specific interactions. Minimizing this free energy leads to modified Poisson-Boltzmann equations with appropriate boundary conditions. Here, we review how this strategy has been used to predict some of the ways ion-specific effects can modify the forces acting within and between charged interfaces immersed in salt solutions. (C) 2011 Elsevier Ltd. All rights reserved.
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