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Wetting Transition of Ionic Substrate by Modulating Surface Charge Distribution
- Source :
- Langmuir. 36:3667-3675
- Publication Year :
- 2020
- Publisher :
- American Chemical Society (ACS), 2020.
-
Abstract
- Surface wettability regulation plays a crucial role in antifouling and related applications. For regulating surface wettability, one of the effective approaches is to modulate the surface charge distribution. Herein, we report a theoretical study for unraveling the mechanistic relation between surface charge distribution and ionic substrate wettability. Specifically, acetonitrile liquids at ambient condition in contact with various ionic substrates are considered. At different surface charge distributions, the interfacial thermodynamic properties are investigated by means of molecular density functional theory. We find that the variation of the spatial interval among the discrete charges strongly alters the substrate-acetonitrile interaction and leads to an oscillation in the interfacial tension, indicating that the substrate can be tuned from a solvophobic one to a solvophilic one. This trend can be further enhanced by increasing the charge quantity. The underlying mechanisms are extensively discussed and expatiated. Our work provides theoretical guidance to engineer and regulate surface wettability.
- Subjects :
- Work (thermodynamics)
Materials science
Ionic bonding
Charge (physics)
02 engineering and technology
Surfaces and Interfaces
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
0104 chemical sciences
Surface tension
Wetting transition
Chemical physics
Electrochemistry
General Materials Science
Surface charge
Wetting
0210 nano-technology
Solvophobic
Spectroscopy
Subjects
Details
- ISSN :
- 15205827 and 07437463
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Langmuir
- Accession number :
- edsair.doi.dedup.....0c61f90f65cc74d5cc50544da19715c3