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High reactivity of carbon nanotubes and fluorinated carbon nanotubes irradiated by Ar + ions
Author(s) -
Fedoseeva Yu. V.,
Bulusheva L. G.,
Okotrub A. V.,
Vyalikh D. V.,
Fonseca A.
Publication year - 2010
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.201000202
Subject(s) - vacancy defect , carbon nanotube , xanes , irradiation , graphene , ion , materials science , carbon fibers , density functional theory , absorption spectroscopy , reactivity (psychology) , spectral line , atomic physics , spectroscopy , analytical chemistry (journal) , chemistry , nanotechnology , crystallography , computational chemistry , organic chemistry , medicine , physics , alternative medicine , pathology , quantum mechanics , astronomy , composite number , nuclear physics , composite material
Abstract Pristine and fluorinated single‐wall carbon nanotubes (SWCNTs) irradiated by Ar + ion beam with kinetic energy 1 keV have been studied using C K‐edge X‐ray absorption near‐edge spectroscopy (XANES). Theoretical spectra used for interpretation of the experiment were plotted based on density functional theory (DFT) calculations of graphene fragment contained different types of defects (single‐atom vacancy, carbon adatom, oxygen or fluorine functionalized vacancy) within Z + 1 approximation. Comparison between experimental and theoretical spectra shows that ion irradiation creates vacancies and boundary atoms of defects readily interact with oxygen yielding ether groups mainly.