Electronic properties and atomic structure of graphene oxide membranes (Articolo in rivista)

Type
Label
  • Electronic properties and atomic structure of graphene oxide membranes (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.carbon.2010.09.063 (literal)
Alternative label
  • Pacilé D., Meyer J.C., Fraile Rodríguez A., Papagno M., Gómez-Navarro C., Sundaram R.S., Burghard M., Kern K., Carbone C., Kaiser U. (2011)
    Electronic properties and atomic structure of graphene oxide membranes
    in Carbon
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pacilé D., Meyer J.C., Fraile Rodríguez A., Papagno M., Gómez-Navarro C., Sundaram R.S., Burghard M., Kern K., Carbone C., Kaiser U. (literal)
Pagina inizio
  • 966 (literal)
Pagina fine
  • 972 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 49 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • http://dx.doi.org/10.1016/j.carbon.2010.09.063 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento Fisica, Università della Calabria, and INFN-Gruppo collegato di Cosenza, 87036 Arcavacata di Rende (CS), Italy Electron Microscopy Group of Material Sciences, University of Ulm, D-89081 Ulm, Germany Swiss Light Source, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland Istituto di Struttura della Materia-Consiglio Nazionale delle Ricerche, Basovizza, Trieste, Italy Max-Planck Institut fuer Festkoerperfoschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049 Madrid, Spain Ecole Polytechnique Fédérale de Lausanne, Institut de Physique de la Matière Condensée, 1015 Lausanne, Switzerland (literal)
Titolo
  • Electronic properties and atomic structure of graphene oxide membranes (literal)
Abstract
  • We have performed a near-edge X-ray absorption fine-structure (NEXAFS) and a transmission electron microscopy (TEM) investigation of freely suspended graphene oxide (GO) sheets. We utilized a photoemission electron microscope to identify GO membranes and to acquire C K and O K absorption spectra. The overall line shape of C K-edge spectra demonstrates that the honeycomb carbon network of graphene is the scaffold of GO. However, the intensity ratio of pi* and sigma* resonances, and a broad feature at about 20 eV from the edge, indicate the presence of new carbon bonds. The O K-edge spectra show that oxidized regions are made of carbonyl, epoxide, and hydroxyl groups attached to the plane of graphene, while carboxyl groups might also be present at the edges. Further, our study indicates the presence of ordered arrangements of oxygen atoms in GO sheets. Our investigation provides a new and efficient route to study the electronic structure of suspended membranes. (literal)
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