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Comparative NEXAFS examination of single‐wall carbon nanotubes produced by different methods
Author(s) -
Bulusheva L. G.,
Okotrub A. V.,
Lavskaya Yu. V.,
Vyalikh D. V.,
DettlaffWeglikowska U.,
Fonseca A.,
Hata K.
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982258
Subject(s) - xanes , carbon nanotube , materials science , chemical vapor deposition , absorption (acoustics) , carbon fibers , vaporization , analytical chemistry (journal) , absorption spectroscopy , spectroscopy , chemical state , extended x ray absorption fine structure , nanotechnology , chemistry , x ray photoelectron spectroscopy , chemical engineering , optics , organic chemistry , composite number , composite material , physics , engineering , quantum mechanics
Three types of single‐wall carbon nanotubes (SWCNTs) have been comparatively studied using near C K‐edge X‐ray absorption fine structure (NEXAFS) spectroscopy. The samples have been produced by laser vaporization, chemical vapor deposition (CVD), and super growth methods and contained SWCNTs with the average diameter of 1.2, 2.4, and 4.0 nm, respectively. The π* resonance of the NEXAFS spectra of the samples showed four features slightly distinguished in the intensity and energy position. Quantum‐chemical calculations revealed that these features could be determined by unoccupied partial density of states of the core‐hole‐exited carbon atoms.