A general strategy for direct synthesis of reduced graphene oxide by chemical exfoliation of graphite

A. F. Betancur, N. Ornelas-Soto, A. M. Garay-Tapia, F. R. Pérez, Ángel Salazar, A. G. García

    Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

    23 Citas (Scopus)

    Resumen

    In this work, a first stage of synthesis to obtain reduced graphene oxide (rGO) using an efficient chemical exfoliation method from graphite was studied. An ammonium hydroxide and a nitric-sulfuric acid mixture were used for in situ oxidation and partial-reduction of graphite. Flakes with a thickness of 3 nm were observed by using AFM, suggesting the presence of ten or less graphene layers. The average C/O atomic percentage ratio obtained was 4.27, which is similar to those results obtained by conventional reduction processes associated with using hydrazine. In addition, a graphitic nitrogen functionalization was observed during the proposed process. Besides that, the precursor of rGO suspension obtained remained stable for six months. Therefore, the present study showed a less aggressive and dangerous chemistry route in order to rGO production than others previously reported works.

    Idioma originalInglés
    Páginas (desde-hasta)51-61
    Número de páginas11
    PublicaciónMaterials Chemistry and Physics
    Volumen218
    DOI
    EstadoPublicada - 1 oct. 2018

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