Reduction dependent wetting properties of graphene oxide (Articolo in rivista)

Type
Label
  • Reduction dependent wetting properties of graphene oxide (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.carbon.2014.05.052 (literal)
Alternative label
  • Perrozzi, Francesco; Croce, Salvatore; Treossi, Emanuele; Palermo, Vincenzo; Santucci, Sandro; Fioravanti, Giulia; Ottaviano, Luca (2014)
    Reduction dependent wetting properties of graphene oxide
    in Carbon
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Perrozzi, Francesco; Croce, Salvatore; Treossi, Emanuele; Palermo, Vincenzo; Santucci, Sandro; Fioravanti, Giulia; Ottaviano, Luca (literal)
Pagina inizio
  • 473 (literal)
Pagina fine
  • 480 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Aquila; Consiglio Nazionale delle Ricerche (CNR); Lab MISTE R; Consiglio Nazionale delle Ricerche (CNR) (literal)
Titolo
  • Reduction dependent wetting properties of graphene oxide (literal)
Abstract
  • This study reports contact angle measurements of standard, diol and aromatic solvents on graphene oxide thin films thermally reduced in ultra-high vacuum up to 900 degrees C. The films were chemically and morphologically characterized using respectively X-ray photoemission spectroscopy and atomic force microscopy. The characterization shows that the wetting occurs in the chemically heterogeneous regime, namely the surface roughness (3 nm) does not influence the wetting properties of the samples. Zisman, Owens-Wendt and Neumann methods have been applied in order to calculate the surface free energy of the thin films showing that the Owens-Wendt method best fit the data trends. The surface free energy varies from 51 mN/m (pristine graphene oxide) to 39 mN/m (900 degrees C reduced graphene oxide). A correlation between the surface chemical composition, the surface free energy and its polar and dispersive components is reported, giving a rationale to the wetting properties of graphene oxide and reduced graphene oxide. (C) 2014 Elsevier Ltd. All rights reserved. (literal)
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