Electronic structures and bonding properties of chlorine-treated nitrogenated carbon nanotubes: X-ray absorption and scanning photoelectron microscopy studies

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

Research output: Contribution to journalArticle

24 Citations (Scopus)
2 Downloads (Pure)

Abstract

The electronic and bonding properties of nitrogenated carbon nanotubes (N-CNTs) exposed to chlorine plasma were investigated using C and N K-edge x-ray absorption near-edge structure (XANES) and scanning photoelectron microscopy (SPEM). The C and N K-edge XANES spectra of chlorine-treated N-CNTs consistently reveal the formation of pyridinelike N-CNTs by the observation of 1s ->pi(*)(e(2u)) antibonding and 1s ->pi(*)(b(2g)) bonding states. The valence-band photoemission spectra obtained from SPEM images indicate that chlorination of the nanotubes enhances the C-N bonding. First-principles calculations of the partial densities of states in conjunction with C K-edge XANES data identify the presence of C-Cl bonding in chlorine treated N-CNTs. (C) 2007 American Institute of Physics.
Original languageEnglish
Pages (from-to)192107
JournalApplied Physics Letters
Volume90
Issue number19
DOIs
Publication statusPublished - 8 May 2007

Fingerprint Dive into the research topics of 'Electronic structures and bonding properties of chlorine-treated nitrogenated carbon nanotubes: X-ray absorption and scanning photoelectron microscopy studies'. Together they form a unique fingerprint.

  • Cite this