Abstract
The synthesis and characterization of graphite oxide (GO), graphene (GS), and the composites: GS–CeO2 and GO–CeO2 are reported. This synthesis was carried out by mixing aqueous solutions of CeCl3·7H2O and GO, which yields the oxidized composite GO–CeO2. GO–CeO2 was hydrothermally reduced with ethylene glycol, at 120 °C, yielding the reduced composite GS–CeO2. GO, GS ,and the composites with CeO2 were characterized by CHN, TG/DTG, BET, XRD, SEM microscopy, FTIR, and Raman spectroscopy. The estimation of crystallite size of CeO2 anchored on GO and on GS by Raman, XRD, and SEM agreed very well showing diameters about 5 nm. The role of particles of CeO2 coating carbon sheets of GO and GS was discussed.
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Acknowledgements
The authors wish to thank Lara DC (SESC/LSCP) for his help and support in TG analyses, Ando RA, Serrano, SHP for providing high-purity graphite, CAPES for a doctoral fellowship, and Fantini M.C.A., for the surface area measurements.
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da Silva, M.F.P., de Jesus Fraga da Costa, H.C., Triboni, E.R. et al. Synthesis and characterization of CeO2–graphene composite. J Therm Anal Calorim 107, 257–263 (2012). https://doi.org/10.1007/s10973-011-1924-8
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DOI: https://doi.org/10.1007/s10973-011-1924-8