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

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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.
LanguageEnglish
Pages192107
JournalApplied Physics Letters
Volume90
Issue number19
DOIs
Publication statusPublished - 8 May 2007

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chlorine
photoelectrons
carbon nanotubes
electronic structure
microscopy
scanning
x ray absorption
x rays
chlorination
data structures
nanotubes
photoelectric emission
valence
electronics

Cite this

Ray, SC ; Pao, CW ; Tsai, HM ; Chiou, JW ; Pong, WF ; Chen, CW ; Tsai, MH ; Papakonstantinou, P ; Chen, LC ; Chen, KH ; Graham, WG. / Electronic structures and bonding properties of chlorine-treated nitrogenated carbon nanotubes: X-ray absorption and scanning photoelectron microscopy studies. In: Applied Physics Letters. 2007 ; Vol. 90, No. 19. pp. 192107.
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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.",
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Electronic structures and bonding properties of chlorine-treated nitrogenated carbon nanotubes: X-ray absorption and scanning photoelectron microscopy studies. / Ray, SC; Pao, CW; Tsai, HM; Chiou, JW; Pong, WF; Chen, CW; Tsai, MH; Papakonstantinou, P; Chen, LC; Chen, KH; Graham, WG.

In: Applied Physics Letters, Vol. 90, No. 19, 08.05.2007, p. 192107.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electronic structures and bonding properties of chlorine-treated nitrogenated carbon nanotubes: X-ray absorption and scanning photoelectron microscopy studies

AU - Ray, SC

AU - Pao, CW

AU - Tsai, HM

AU - Chiou, JW

AU - Pong, WF

AU - Chen, CW

AU - Tsai, MH

AU - Papakonstantinou, P

AU - Chen, LC

AU - Chen, KH

AU - Graham, WG

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AB - 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.

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