Atomic adsorption on pristine graphene along the Periodic Table of Elements – From PBE to non-local functionals
[Display omitted] •A complete database for atomic adsorption on graphene is presented.•Calculations are done within PBE, PBE+D2, PBE+D3 and vdW-DF2 approaches.•Adsorption trends along the groups and rows of the Periodic Table are discussed.•Adsorption is always exothermic when dispersion interaction...
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Veröffentlicht in: | Applied surface science 2018-04, Vol.436, p.433-440 |
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Format: | Artikel |
Sprache: | eng |
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•A complete database for atomic adsorption on graphene is presented.•Calculations are done within PBE, PBE+D2, PBE+D3 and vdW-DF2 approaches.•Adsorption trends along the groups and rows of the Periodic Table are discussed.•Adsorption is always exothermic when dispersion interactions are included.•The elements for which dispersion interactions are needed are identified.
The understanding of atomic adsorption on graphene is of high importance for many advanced technologies. Here we present a complete database of the atomic adsorption energies for the elements of the Periodic Table up to the atomic number 86 (excluding lanthanides) on pristine graphene. The energies have been calculated using the projector augmented wave (PAW) method with PBE, long-range dispersion interaction corrected PBE (PBE+D2, PBE+D3) as well as non-local vdW-DF2 approach. The inclusion of dispersion interactions leads to an exothermic adsorption for all the investigated elements. Dispersion interactions are found to be of particular importance for the adsorption of low atomic weight earth alkaline metals, coinage and s-metals (11th and 12th groups), high atomic weight p-elements and noble gases. We discuss the observed adsorption trends along the groups and rows of the Periodic Table as well some computational aspects of modelling atomic adsorption on graphene. |
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ISSN: | 0169-4332 1873-5584 1873-5584 |
DOI: | 10.1016/j.apsusc.2017.12.046 |