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Issue 25, 2011
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On the physisorption of water on graphene: a CCSD(T) study

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The electronic structure of the zero-gap two-dimensional graphene has a charge neutrality point exactly at the Fermi level that limits the practical application of this material. There are several ways to modify the Fermi-level-region of graphene, e.g. adsorption of graphene on different substrates or different molecules on its surface. In all cases the so-called dispersion or van der Waals interactions can play a crucial role in the mechanism, which describes the modification of electronic structure of graphene. The adsorption of water on graphene is not very accurately reproduced in the standard density functional theory (DFT) calculations and highly-accurate quantum-chemical treatments are required. A possibility to apply wavefunction-based methods to extended systems is the use of local correlation schemes. The adsorption energies obtained in the present work by means of CCSD(T) are much higher in magnitude than the values calculated with standard DFT functional although they agree that physisorption is observed. The obtained results are compared with the values available in the literature for binding of water on the graphene-like substrates.

Graphical abstract: On the physisorption of water on graphene: a CCSD(T) study

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Publication details

The article was received on 03 Mar 2011, accepted on 11 May 2011 and first published on 31 May 2011

Article type: Paper
DOI: 10.1039/C1CP20609E
Phys. Chem. Chem. Phys., 2011,13, 12041-12047

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    On the physisorption of water on graphene: a CCSD(T) study

    E. Voloshina, D. Usvyat, M. Schütz, Y. Dedkov and B. Paulus, Phys. Chem. Chem. Phys., 2011, 13, 12041
    DOI: 10.1039/C1CP20609E

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