title: Super-washing does not leave single walled carbon nanotubes iron-free.
abstract: We demonstrate with transmission electron microscopy and X-ray photoelectron spectroscopy that single-walled carbon nanotubes contain significant amounts of iron in the form of Fe(3)O(4), which even after acid washing, is not removed.
authors.affiliation: Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.
authors.forename: Kerstin
authors.initials: K
authors.lastname: Jurkschat
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Ji
authors.forename: Alison
authors.initials: A
authors.lastname: Crossley
authors.forename: Richard G
authors.initials: RG
authors.lastname: Compton
authors.forename: Craig E
authors.initials: CE
authors.lastname: Banks
mesh_terms: D000143:Acids; D004866:Equipment Contamination; D007501:Iron / Q000032:analysis*; D046529:Microscopy, Electron, Transmission; D037742:Nanotubes, Carbon; D013052:Spectrometry, X-Ray Emission
chemical_list: D000143:Acids; D037742:Nanotubes, Carbon; D007501:Iron