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

Producción científica: Contribución a una revistaArtículo en revista científica indexadarevisión exhaustiva

32 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

Nota bibliográfica

Publisher Copyright:
© 2018

Palabras clave

  • Reduced graphene oxide
  • Graphite oxidation
  • Exfoliation
  • Reduction

Tipos de Productos Minciencias

  • Artículos de investigación con calidad A2 / Q2

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