Bostrom, M and Kunz, W and Ninham, BW (2005) Hofmeister effects in surface tension of aqueous electrolyte solution. LANGMUIR, 21 (6). pp. 2619-2623. ISSN 0743-7463,
Full text not available from this repository.Abstract
The surface tension of electrolyte solutions shows marked specific ion effects. We here show an important role for both ionic solvation energies and ionic dispersion potentials in determining this ion specific surface tension of salt solutions. The ion self-free energy changes when an ion moves from bulk solution into the interfacial region, with its decreasing water density profile. We will show that the solvation energies of different ions correlate very well with the surface tension of salt solutions. Inclusion of this distance-dependent self-free energy contribution brings qualitative agreement with experiments and the right Hoffmeister series. This is so not only for surface tension changes but also for measured surface potentials. The inclusion of ionic dispersion interaction potentials further improves the agreement with experiments. We discuss how further progress in the theory of the surface tension of salts can be achieved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SELF-FREE ENERGIES; SALT-SOLUTIONS; ION HYDRATION; WATER-MOLECULES; INTERFACE; DISPERSION; SOLVATION; DYNAMICS; SIMULATION; MECHANISM; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry VI - Physical Chemistry (Solution Chemistry) > Prof. Dr. Werner Kunz |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 20 May 2021 13:54 |
| Last Modified: | 20 May 2021 13:54 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36370 |
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