Abstract
Grafting of fluorine species on carbon nanostructures has attracted interest due to the effective modification of physical and
chem-
ical properties of the starting materials. Various techniques have been employed to achieve a controlled fluorination yield; however,
the effect of contaminants is rarely discussed, although they are often present. In the present work, the fluorination of vertically
aligned multiwalled carbon nanotubes was performed using plasma treatment in a magnetron sputtering chamber with fluorine
diluted in an argon atmosphere with an
Ar/F
2
ratio of 95:5. The effect of heavily diluted fluorine in the precursor gas mixture is
investigated by evaluating the modifications in the nanotube structure and the electronic properties upon plasma treatment. The
existence of oxygen-based grafted species is associated with background oxygen species present in the plasma chamber in addition
to fluorine. The thermal stability and desorption process of the fluorine species grafted on the carbon nanotubes during the fluorine
plasma treatment were evaluated by combining different spectroscopic techniques.
chem-
ical properties of the starting materials. Various techniques have been employed to achieve a controlled fluorination yield; however,
the effect of contaminants is rarely discussed, although they are often present. In the present work, the fluorination of vertically
aligned multiwalled carbon nanotubes was performed using plasma treatment in a magnetron sputtering chamber with fluorine
diluted in an argon atmosphere with an
Ar/F
2
ratio of 95:5. The effect of heavily diluted fluorine in the precursor gas mixture is
investigated by evaluating the modifications in the nanotube structure and the electronic properties upon plasma treatment. The
existence of oxygen-based grafted species is associated with background oxygen species present in the plasma chamber in addition
to fluorine. The thermal stability and desorption process of the fluorine species grafted on the carbon nanotubes during the fluorine
plasma treatment were evaluated by combining different spectroscopic techniques.
Original language | English |
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Pages (from-to) | 2263 - 2271 |
Journal | Beilstein Journal of Nanotechnology |
Volume | 6 |
Publication status | Published - 2015 |