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Webpage of all papers devoted to electrokinetic phenomena
Molecular Origins of the Zeta Potential
Milan Předota1*, Michael L. Machesky2, David J. Wesolowski3
1Institute of Physics and Biophysics,
Faculty of Science, University of South Bohemia, Branisovska 1760, 370 05 Ceske
Budejovice, Czech Republic
2University of Illinois, Illinois State Water Survey, 2204 Griffith Drive,
Champaign, IL 61820-7495
3Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN
37831-6110
Langmuir, 2016, 32 (40), pp 10189–10198, http://dx.doi.org/10.1021/acs.langmuir.6b02493
Supporting Information:
SIMULATED SYSTEMS
Movies of electroosmotic flows are available here: http://home.prf.jcu.cz/~predota/zeta/si-movies/
Simulation movies of electroosmosis in electric field
2.1×108 V/m in the direction from left to right.
Each movie captures 480 ps simulation with 240 frames at frame rate 1 frame per
2 ps.
Panel 1: Movies and snapshots of the interfacial region (about 15 Å from the TiO2 surface) for simulations with bulk RbCl, NaCl and SrCl2 concentrations about 0.45 M, 0.4 M and 0.35 M, respectively.
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NaCl | SrCl2 | |||||
| -0.4 C/m2 |
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| -0.2 C/m2 |
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| -0.1 C/m2 |
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| 0.0 C/m2 |
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| +0.1 C/m2 |
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Panel 2: Movies and snapshots of the interfacial region (about 15 Å from the TiO2 surface) for simulations with only counterions, i.e. Rb+, Na+, and Sr2+ for -0.4, -0.2, and -0.1 C/m2, and Cl- for +0.1 C/m2 (i.e. the last row represents one simulations but is included in each column to complete the series). For neutral surface, limited number of ion pairs (6 RbCl or NaCl or SrCl2) is dissolved to observe the behavior of ions at low concentrations.
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NaCl | SrCl2 | |||||
| -0.4 C/m2 |
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| -0.2 C/m2 |
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| -0.1 C/m2 |
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| 0.0 C/m2 |
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| +0.1 C/m2 |
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