Hydrogen chemisorption on a graphite surface

Details Hydrogen chemisorption on a graphite surface Hydrogen chemisorption on a graphite surface

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...260..321k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 260, no. 1-2, p. 321-328.

Astronomy and Astrophysics

Astrophysics

10

Chemisorption, Graphite, Hydrogen Atoms, Interstellar Matter, Surface Reactions, Cosmic Dust, Perturbation Theory

Scientific paper

Using a perturbational approach we consider the chemisorption of a H-atom on a graphite (001) basal surface, having in mind that the graphite-H system reflects to some degree the interaction between an interstellar grain with graphitic parts and a H-atom. The theoretical model we have developed is based on the assumption that the graphite surface can be considered as a rigid network of identical carbon clusters representing the surface lattice geometry. We find, in agreement with previous studies, that the energetically preferred position of the chemisorbed H-atom is above a C-atom and that the wall-height between two adjacent binding sites of the H-atom is about 0.1 eV.

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