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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.9b00520
|2 doi
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|a eng
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|a van Lin, Simone R
|e verfasserin
|4 aut
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|a Ion-Specific and pH-Dependent Hydration of Mica-Electrolyte Interfaces
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|c 2019
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|a Text
|b txt
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|a ƒaComputermedien
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|a Date Completed 25.06.2020
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|a Date Revised 23.07.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Hydration forces play a crucial role in a wide range of phenomena in physics, chemistry, and biology. Here, we study the hydration of mica surfaces in contact with various alkali chloride solutions over a wide range of concentrations and pH values. Using atomic force microscopy and molecular dynamics simulations, we demonstrate that hydration forces consist of a superposition of a monotonically decaying and an oscillatory part, each with a unique dependence on the specific type of cation. The monotonic hydration force gradually decreases in strength with decreasing bulk hydration energy, leading to a transition from an overall repulsive (Li+, Na+) to an attractive (Rb+, Cs+) force. The oscillatory part, in contrast, displays a binary character, being hardly affected by the presence of strongly hydrated cations (Li+, Na+), but it becomes completely suppressed in the presence of weakly hydrated cations (Rb+, Cs+), in agreement with a less pronounced water structure in simulations. For both aspects, K+ plays an intermediate role, and decreasing pH follows the trend of increasing Rb+ and Cs+ concentrations
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Grotz, Kara K
|e verfasserin
|4 aut
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|a Siretanu, Igor
|e verfasserin
|4 aut
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|a Schwierz, Nadine
|e verfasserin
|4 aut
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|a Mugele, Frieder
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 35(2019), 17 vom: 30. Apr., Seite 5737-5745
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|g volume:35
|g year:2019
|g number:17
|g day:30
|g month:04
|g pages:5737-5745
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|u http://dx.doi.org/10.1021/acs.langmuir.9b00520
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