Super-washing does not leave single walled carbon nanotubes iron-free.
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.
Jurkschat
Kerstin
K
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.
Ji
Xiaobo
X
Crossley
Alison
A
Compton
Richard G
RG
Banks
Craig E
CE
D000143:Acids; D004866:Equipment Contamination; D007501:Iron / Q000032:analysis*; D046529:Microscopy, Electron, Transmission; D037742:Nanotubes, Carbon; D013052:Spectrometry, X-Ray Emission
D000143:Acids; D037742:Nanotubes, Carbon; D007501:Iron