title: Oxidation of titanium-decorated single-walled carbon nanotubes and subsequent reduction by lithium.
abstract: The chemical surface structure of Ti-decorated single-walled carbon nanotubes (SWNTs) is studied. X-ray photoelectron spectra show that Ti adatoms on the SWNT surface oxidize even under ultra-high-vacuum conditions, presenting a serious obstacle for the use of Ti-decorated SWNTs for hydrogen storage. A subsequent deposition of Li can, however, reduce the degree of Ti oxidation, "liberating" Ti atoms for the interaction with hydrogen molecules in hydrogen storage applications.
authors.affiliation: Department of Chemistry, University of Nevada Las Vegas (UNLV), Las Vegas, Nevada 89154-4003, USA. citran@unlv.nevada.edu
authors.forename: Ich C
authors.initials: IC
authors.lastname: Tran
authors.forename: Roberto
authors.initials: R
authors.lastname: Félix
authors.forename: Marcus
authors.initials: M
authors.lastname: Bär
authors.forename: Lothar
authors.initials: L
authors.lastname: Weinhardt
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Zhang
authors.forename: Clemens
authors.initials: C
authors.lastname: Heske