Published May 7, 2007 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Department of Physics and Astronomy, Queens University of Belfast, Belfast, Antrim BT71NN, Northern Ireland (United Kingdom)
  • 2. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan (China)
  • 3. Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan (China)
  • 4. NRI, School of Electrical and Mechanical Engineering, University of Ulster at Jordanstown, Newtownabbey, County Antrim BT37OQB, Northern Ireland (United Kingdom)
  • 5. Department of Physics, National Sun Yat-Sen University, Kaohsiung 804, Taiwan (China)
  • 6. Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan (China)
  • 7. Department of Physics, Tamkang University, Tamsui 251, Taiwan (China)

Description

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→π*(e2u) antibonding and 1s→π*(b2g) 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

Additional details

Identifiers

DOI
10.1063/1.2737392;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
90
Journal Issue
19
Journal Page Range
p. 192107-192107.3
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39001234
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ABSORPTION; ABSORPTION SPECTROSCOPY; BOUND STATE; CARBON; CHEMICAL BONDS; CHLORINATION; CHLORINE; ELECTRONIC STRUCTURE; NANOTUBES; PHOTOELECTRON SPECTROSCOPY; SCANNING ELECTRON MICROSCOPY; X-RAY SPECTROSCOPY
Descriptors DEC
CHEMICAL REACTIONS; ELECTRON MICROSCOPY; ELECTRON SPECTROSCOPY; ELEMENTS; HALOGENATION; HALOGENS; MICROSCOPY; NANOSTRUCTURES; NONMETALS; SORPTION; SPECTROSCOPY

Optional Information

Notes
(c) 2007 American Institute of Physics