期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 327, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2020.114795
关键词
Ionic liquid; 2D materials; Dirac cone; density functional theory
资金
- MEPhI Academic Excellence Project (Ministry of Education and Science of the Russian Federation) [02.a03.21.0005]
- Program of Visiting Professor of Politecnico di Torino
The adsorption phenomenon is described by considering the dependence of adsorption sites and energy, proposing a simplified description method and analyzing lateral interaction potentials. Eventually, a self-consistent nonlinear model is proposed to determine the equilibrium distribution of surface particles.
The adsorption phenomenon is often described by means of a kinetic equation, in the form proposed by Langmuir. From the statistical point of view, the analysis is done in terms of adsorption sites, in the framework of Boltzmann or Fermi-like statistics. We show that a more simple description can be done in terms of an effective adsorption energy, taking into account its dependence on the density of adsorbed particles. Some elementary lateral interaction potentials are analyzed to illustrate this dependence. We show that the effective adhesion energy may be written as a power law of the surface coverage ratio. Eventually, we propose a generalization of the Frumkin-Fowler-Guggenheim model as a self-consistent non-linear relation determining the actual equilibrium distribution of surface particles. (C) 2020 Elsevier B.V. All rights reserved.
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