A high resolution XPS study of sidewall functionalized MWCNTs by fluorination

作者：Lee Jeong Min; Kim Sang Jin; Kim Ju Wan; Kang Phil Hyun; Nho Young Chang; Lee Young Seak^*

来源：Journal of Industrial and Engineering Chemistry, 2009, 15(1): 66-71.

DOI：10.1016/j.jiec.2008.08.010

• MWCNTs
• Fluorination
• Surface modification
• XPS

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.

• 出版日期2009-1