Get access

The Role of Oxidative Debris on Graphene Oxide Films

Authors

  • Dr. David López-Díaz,

    Corresponding author
    1. Departamento de Química Física, Facultad de Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos s/n. 37008 Salamanca (Spain), Fax: (+34) 923-294574
    • Departamento de Química Física, Facultad de Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos s/n. 37008 Salamanca (Spain), Fax: (+34) 923-294574

    Search for more papers by this author
  • Prof. Maria Mercedes Velázquez,

    1. Departamento de Química Física, Facultad de Ciencias Químicas, Universidad de Salamanca, Plaza de los Caídos s/n. 37008 Salamanca (Spain), Fax: (+34) 923-294574
    Search for more papers by this author
  • Santiago Blanco de La Torre,

    1. GRAnPH Nanotech, Grupo Antolín Ingeniería SA, 09007 Burgos (Spain)
    Search for more papers by this author
  • Ana Pérez-Pisonero,

    1. GRAnPH Nanotech, Grupo Antolín Ingeniería SA, 09007 Burgos (Spain)
    Search for more papers by this author
  • Prof. Raquel Trujillano,

    1. Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad de Salamanca, 37008 Salamanca (Spain)
    Search for more papers by this author
  • Prof. José Luis García Fierro,

    1. Instituto de Catálisis y Petroleoquímica, CSIC, 28049 Cantoblanco, Madrid (Spain)
    Search for more papers by this author
  • Sergi Claramunt,

    1. MIND-IN2UB, Departament d'Electrònica, Universitat de Barcelona, 08028 Barcelona (Spain)
    Search for more papers by this author
  • Prof. Albert Cirera

    1. MIND-IN2UB, Departament d'Electrònica, Universitat de Barcelona, 08028 Barcelona (Spain)
    Search for more papers by this author

Abstract

We study the effect of oxidative impurities on the properties of graphene oxide and on the graphene oxide Langmuir–Blodgett films (LB). The starting material was grupo Antolín nanofibers (GANF) and the oxidation process was a modified Hummers method to obtain highly oxidized graphene oxide. The purification procedure reported in this work eliminated oxidative impurities decreasing the thickness of the nanoplatelets. The purified material thus obtained presents an oxidation degree similar to that achieved by chemical reduction of the graphite oxide. The purified and non-purified graphene oxides were deposited onto silicon by means of a Langmuir–Blodgett (LB) methodology. The morphology of the LB films was analyzed by field emission scanning microscopy (FE-SEM) and micro-Raman spectroscopy. Our results show that the LB films built by transferring Langmuir monolayers at the liquid-expanded state of the purified material are constituted by close-packed and non-overlapped nanoplatelets. The isotherms of the Langmuir monolayer precursor of the LB films were interpreted according to the Volmer’s model.

Get access to the full text of this article

Ancillary