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A comparative study of the electronic structures of oxygen- and chlorine-treated nitrogenated carbon nanotubes by x-ray absorption and scanning photoelectron microscopy
Applied Physics Letters
The electronic structures and bonding properties of oxygen-and chlorine-treated nitrogenated carbon nanotubes ͑N-CNTs͒ were studied using x-ray absorption near-edge structure ͑XANES͒ and scanning photoelectron microscopy. Features in the C K-edge XANES spectra are shifted by ϳ0.3 eV toward higher energies and by ϳ1.1 eV toward lower energies relatively to those of the more symmetrical pyridinelike and graphitelike structured N-CNTs upon chlorination and oxidation, respectively. Increases in Ndoi:10.1063/1.2807275 fatcat:yw4b6w2lfvdztnslypb5s74xri