Abstract
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.
Original language | English |
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Pages (from-to) | 542-550 |
Number of pages | 9 |
Journal | Current Opinion in Colloid and Interface Science |
Volume | 16 |
Issue number | 6 |
DOIs | |
State | Published - Dec 2011 |
Keywords
- Electrostatic interactions
- Forces between charged surfaces
- Hydration forces
- Ion specific interactions
- Poisson-Boltzmann theory
All Science Journal Classification (ASJC) codes
- Surfaces and Interfaces
- Physical and Theoretical Chemistry
- Polymers and Plastics
- Colloid and Surface Chemistry