Modelization of the $$\hbox {H}_{2}$$ H 2 adsorption on graphene and molecular dynamics simulation

Modelization of the $$\hbox {H}_{2}$$ H 2 adsorption on graphene and molecular dynamics... In the search for efficient molecular dynamics simulation models both simplicity and acceptable accuracy matter. In the present study, a model of the graphene- $$\hbox {H}_2$$ H 2 physisorption system is used to explore its performance and limitations under canonical NVT and microcanonical NVE simulation conditions. The model implies several simplifications that can be summarized in (a) a single ideal planar frozen graphene-like layer of C atoms, (b) rigid rotor $$\hbox {H}_2$$ H 2 molecules and (c) interaction potentials written as C–H2 and $$\hbox {H}_2$$ H 2 – $$\hbox {H}_2$$ H 2 site–site Improved Lennard-Jones potentials parameterized to reproduce DFT calculations. This model can be used in a variety of molecular dynamics simulation conditions, both in NVT and NVE ensembles. Such simulations lead to the formation of a single layer of adsorbed $$\hbox {H}_2$$ H 2 molecules in dynamically stable equilibrium with a fluid-phase region. In addition, the incipient formation of secondary layers for high-density conditions is also observed. Some properties as average pressure, temperatures and fluid-phase densities are discussed as well as possible improvements of the model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Theoretical Chemistry Accounts Springer Journals

Modelization of the $$\hbox {H}_{2}$$ H 2 adsorption on graphene and molecular dynamics simulation

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Publisher
Springer Berlin Heidelberg
Copyright
Copyright © 2017 by Springer-Verlag GmbH Germany
Subject
Chemistry; Theoretical and Computational Chemistry; Inorganic Chemistry; Organic Chemistry; Physical Chemistry; Atomic/Molecular Structure and Spectra
ISSN
1432-881X
eISSN
1432-2234
D.O.I.
10.1007/s00214-017-2110-2
Publisher site
See Article on Publisher Site

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