title: Is there a difference in van der Waals interactions between rare gas atoms adsorbed on metallic and semiconducting single-walled carbon nanotubes?
abstract: The differences in the polarizabilities of metallic (M) and semiconducting (S) single-walled carbon nanotubes (SWNTs) might give rise to differences in adsorption potentials. We show from experiments and van der Waals--corrected density functional theory that the binding energies of Xe adsorbed on M- and S-SWNTs are nearly identical. Temperature programed desorption experiments of Xe on purified M- and S-SWNTs give similar peak temperatures, indicating that desorption kinetics and binding energies are independent of the type of SWNT. Binding energies computed from vdW-corrected density functional theory are in good agreement with experiments.
authors.affiliation: Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
authors.forename: De-Li
authors.initials: DL
authors.lastname: Chen
authors.forename: Lynn
authors.initials: L
authors.lastname: Mandeltort
authors.forename: Wissam A
authors.initials: WA
authors.lastname: Saidi
authors.forename: John T
authors.initials: JT
authors.lastname: Yates
authors.forename: Milton W
authors.initials: MW
authors.lastname: Cole
authors.forename: J Karl
authors.initials: JK
authors.lastname: Johnson