A comparative study of the electronic structures of oxygen- and chlorine-treated nitrogenated carbon nanotubes by x-ray absorption and scanning photoelectron microscopy

SC Ray, CW Pao, HM Tsai, JW Chiou, WF Pong, CW Chen, MH Tsai, P Papakonstantinou, LC Chen, KH Chen

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

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 similar to 0.3 eV toward higher energies and by similar to 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. (c) 2007 American Institute of Physics.
Original languageEnglish
Pages (from-to)202102
JournalApplied Physics Letters
Volume91
Issue number20
DOIs
Publication statusPublished - 12 Nov 2007

Fingerprint Dive into the research topics of 'A comparative study of the electronic structures of oxygen- and chlorine-treated nitrogenated carbon nanotubes by x-ray absorption and scanning photoelectron microscopy'. Together they form a unique fingerprint.

  • Cite this