Journal
NANOTECHNOLOGIES IN RUSSIA
Volume 4, Issue 1-2, Pages 60-78Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1995078009010078
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Funding
- National Purposeful Scientific and Technical program [02.513.11.3355, 02.513.11.3174, 02.523.12.3020]
- Russian Foundation for Basic Research [06-02-16998]
- Russian Academy of Sciences' Presidium Program Support of Innovations and Investigation [29-026]
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The optimum conditions for the fluorination of single-walled carbon nanotubes (SWCNT) in the atmosphere of gaseous fluorine with the nanotube structure remaining intact up to a stoichiometry of CFx, x similar to 0.5 were determined. The kinetics of fluorination was examined. The fluorinated SWCNTs were characterized by various methods, including transmission electron microscopy, measurements of specific surface area and accessible internal volume, NMR spectroscopy, IR spectroscopy, X-ray absorption and photoelectron spectroscopies, thermal stability, and analysis of gaseous products by mass-spectrometry. The structure of fluorinated SWCNT was preserved up to brutto-composition CF0.5 but degree of fluorination of SWCNT bundles was decreased with distance from the SWCNT surface to its core. Such a decrease becomes evident at similar to 1.5 nm distance. It means that the degree of fluorination depends on the degree of its dispersion.
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