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Reaction of graphite fluoride with NaOH-KOH eutectic |
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| Authors: | Athanasios B Bourlinos Vasilios Georgakilas Dalibor Jancik Andreas Stassinopoulos Emmanuel P Giannelis |
| Institution: | a Institute of Materials Science, NCSR “Demokritos”, Ag. Paraskevi Attikis, Athens 15310, Greece b Departments of Physical Chemistry and Experimental Physics, Palacky University, Olomouc 77146, Czech Republic c Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece d Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, P.O. Box 1385, GR-711 10 Heraklion, Crete, Greece e Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA |
| Abstract: | Graphite fluoride has been generally considered chemically inert against strong alkalis under ambient conditions. In the present study we demonstrate that treatment of graphite fluoride with eutectic NaOH-KOH mixture at 250 °C induces dramatic structural and textural changes in the solid as evidenced by XRD, FT-IR, Raman, UV-vis absorption and fluorescence and microscopy techniques (TEM, AFM). The reaction proceeds in the molten state leading to water-soluble, graphitized carbon particles which unlike graphite fluoride, adopt a variety of morphologies, like platy, tetragonal, triangular, discoid and spherical. The resulting carbon particles are dispersible in water and fluoresce under UV excitation. |
| Keywords: | Graphite fluoride Eutectic NaOH-KOH Graphitization Water-soluble carbon Fluorescence Carbon morphology |
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