A high resolution XPS study of sidewall functionalized MWCNTs by fluorination

Carbon nanotubes must be modified to magnify their application. Understanding the chemistry of carbon nanotubes is a crucial step towards their ultimate practical use. In this study, multi-walled carbon nanotubes (MWCNTs) were fluorinated at several different conditions. The change in the atomic str...

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Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2009, 15(1), , pp.66-71
Main Authors: Lee, Jeong-Min, Kim, Sang Jin, Kim, Ju Wan, Kang, Phil Hyun, Nho, Young Chang, Lee, Young-Seak
Format: Article
Language:English
Subjects:
Fluorination
MWCNTs
Surface modification
XPS
화학공학
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Summary:Carbon nanotubes must be modified to magnify their application. Understanding the chemistry of carbon nanotubes is a crucial step towards their ultimate practical use. In this study, multi-walled carbon nanotubes (MWCNTs) were fluorinated at several different conditions. The change in the atomic structures of fluorinated MWCNTs was investigated using X-ray photoelectron spectroscopy (XPS). All core level spectra of MWCNTs were deconvoluted to several Pseudo-Voigt functions (sum of Gaussian–Lorentzian functions). The amount of doped fluorine increased with increasing doping fluorine partial pressure, and the fluorine atoms were covalently attached to the side-wall of the MWCNTs. However, the increasing rate of F1s component ratio became dull at 70%, as compared with ratios below 70%. This suggests that fluorine contents during the fluorination of carbon materials can be managed by controlling the fluorine mixing ratio.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2008.08.010