Specific Ion Adsorption and Surface Forces in Colloid Science

Mean-field theories that include nonelectrostatic interactions acting on ions near interfaces have been found to accommodate many experimentally observed ion specific effects. However, it is clear that this approach does not fully account for the liquid molecular structure and hydration effects. Thi...

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Bibliographic Details
Published in:The journal of physical chemistry. B 2008-02, Vol.112 (6), p.1580-1585
Main Authors: Lima, E. R. A, Horinek, D, Netz, R. R, Biscaia, E. C, Tavares, F. W, Kunz, W, Boström, M
Format: Article
Language:English
Subjects:
Air
Algorithms
Chemical Phenomena
Chemistry, Physical
Colloids - chemistry
Energy Transfer
Linear Models
NATURAL SCIENCES
NATURVETENSKAP
Poisson Distribution
Surface Properties
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Summary:Mean-field theories that include nonelectrostatic interactions acting on ions near interfaces have been found to accommodate many experimentally observed ion specific effects. However, it is clear that this approach does not fully account for the liquid molecular structure and hydration effects. This is now improved by using parametrized ionic potentials deduced from recent nonprimitive model molecular dynamics (MD) simulations in a generalized Poisson−Boltzmann equation. We investigate how ion distributions and double layer forces depend on the choice of background salt. There is a strong ion specific double layer force set up due to unequal ion specific short-range potentials acting between ions and surfaces.
ISSN:1520-6106
1520-5207
1520-5207
DOI:10.1021/jp7098174