Molecular physisorption on graphene and carbon nanotubes: a comparative ab initio study

Henwood, D and Carey, JD (2008) Molecular physisorption on graphene and carbon nanotubes: a comparative ab initio study MOLECULAR SIMULATION, 34 (10-15). 1019 - 1023. ISSN 0892-7022

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Abstract

The results of ab initio density functional theory calculations of molecular physisorption on a number of different adsorption sites on a graphene sheet and on a (10, 0) single walled carbon nanotube are discussed. Both the Vosko-Wilk-Nusair (VWN) local density approximation (LDA) functional and the Perdew-Wang (PW91) generalized gradient approximation (GGA) functional were employed in calculating the binding energy of a hydrogen molecule to the appropriate carbon nanostructure as well as the optimal molecule – nanostructure separation. Both exterior and interior nanotube adsorption sites were examined and it is shown that the binding energy associated with interior adsorption sites is larger than exterior adsorption on the nanotube or onto the graphene layer. The use of carbon nanostructures for hydrogen storage is also discussed.

Item Type:	Article
Additional Information:	This is an electronic version of an article published in Molecular Simulation, 34(10-15),1019-1023(2008). Molecular Simulation is available online at: http://www.tandfonline.com/doi/abs/10.1080/08927020802175241.
Uncontrolled Keywords:	Science & Technology, Physical Sciences, Chemistry, Physical, Physics, Atomic, Molecular & Chemical, Chemistry, Physics, graphene, carbon nanotube, hydrogen, physisorption, LDA and GGA functionals, ELECTRONIC-PROPERTIES, HYDROGEN
Related URLs:	Author
Divisions:	Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User:	Symplectic Elements
Date Deposited:	07 Dec 2011 14:23
Last Modified:	17 Jan 2015 14:52
URI:	http://epubs.surrey.ac.uk/id/eprint/7679

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