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    题名: A comparative study of the electronic structures of oxygen- and chlorine-treated nitrogenated carbon nanotubes by x-ray absorption and scanning photoelectron microscopy
    作者: Ray, S. C.;Pao, C. W.;Tsai, H. M;Chiou, J. W;Pong, W. F.;Chen, C. W.;Tsai, M.-H.;Papakonstantinou, P.;Chen, L. C.;Chen, K. H.
    贡献者: 淡江大學物理學系
    关键词: carbon nanotubes;oxidation;photoelectron spectra;valence bands;XANES
    日期: 2007-11
    上传时间: 2010-08-10 09:46:48 (UTC+8)
    出版者: College Park: American Institute of Physics (AIP)
    摘要: The electronic structures and bonding properties of oxygen- and chlorine-treated nitrogenated carbon nanotubes (N-CNTs) were studied using x-ray absorption near-edge structure (XANES) and scanning photoelectron microscopy. Features in the C K-edge XANES spectra are shifted by ∼0.3 eV toward higher energies and by ∼1.1 eV toward lower energies relatively to those of the more symmetrical pyridinelike and graphitelike structured N-CNTs upon chlorination and oxidation, respectively. Increases in N K-edge XANES intensities for both chlorination and oxidation reveal substitution of C–C bonds by C–N bonds consistent with the observed valence-band photoemission spectra of the decrease of the C 2s bond and the increase of the N 2s bond.
    關聯: Applied Physics Letters 91(20), 202102(3pages)
    DOI: 10.1063/1.2807275
    显示于类别:[物理學系暨研究所] 期刊論文


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