Synthesis of carbon-silica core-shell nanofibres from a dispersion of fluorinated carbon nanofibers in solvated polysiloxane - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Carbon Année : 2013

Synthesis of carbon-silica core-shell nanofibres from a dispersion of fluorinated carbon nanofibers in solvated polysiloxane

Elodie Disa
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Katia Guérin
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Marc Dubois
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Nadiège Nomède-Martyr
Florence Jestin
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André Hamwi
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Cécile Soubeyrand
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Marion Manteghetti
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Résumé

Carbon-silica core-shell fibers (which unusually consist of carbon nanofibers coated with silica) were synthesized using a two-step process. First, fluorination of carbon nanofibers (CNFs) allows their homogenous dispersion into a polysiloxane matrix. A longlife dispersion of nanofibers in solvated polysiloxane has been prepared. Second, the polysiloxane/ fluorinated carbon was thermally treated in air until 700 C. Defluorination and conversion of polysiloxane into silica occur and result in carbon-silica core-shell fibers. The thermal treatment of the polysiloxane/carbon and the resulting silica/carbon-silica core-shell nanostructures were investigated using solid state nuclear magnetic resonance using 19F, 13C 1H, and 29Si nuclei, X-ray diffraction, Raman spectroscopy, scanning and transmission electron microscopies
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Dates et versions

hal-00803278 , version 1 (21-03-2013)

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  • HAL Id : hal-00803278 , version 1

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Elodie Disa, Katia Guérin, Marc Dubois, Nadiège Nomède-Martyr, Florence Jestin, et al.. Synthesis of carbon-silica core-shell nanofibres from a dispersion of fluorinated carbon nanofibers in solvated polysiloxane. Carbon, 2013, 55, pp.23-33. ⟨hal-00803278⟩
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