Atomic scale imaging and spectroscopic characterization of electrochemically reduced graphene oxide

DOGAN H., EKİNCİ D., Demir U.

Surface Science, cilt.611, ss.54-59, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 611
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1016/j.susc.2013.01.014
  • Dergi Adı: Surface Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.54-59
  • Anahtar Kelimeler: Scanning tunneling microscopy, Graphene, Graphene oxide, Electrochemical reduction, Electrocatalysis, CHEMICALLY-MODIFIED GRAPHENES, EPITAXIAL GRAPHENE, SINGLE-LAYER, FUNCTIONALIZED GRAPHENE, RAMAN-SPECTROSCOPY, METAL-SURFACES, REDUCTION, SHEETS, FILMS, NANOSHEETS
  • Atatürk Üniversitesi Adresli: Evet

Özet

We report on the synthesis of graphene through the simple electrochemical reduction of graphite oxide (GO) on gold electrodes from an aqueous dispersion of GO at cathodic potentials determined by cyclic voltammetiy measurements. The removal of the oxygen-containing functional groups and chemical structural changes during the electrochemical reduction were monitored by Fourier transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy. The atomic structure and size of reduced GO nanostructures on Au(111) were characterized using scanning tunneling microscopy. The results showed that the electrochemical technique could be used for the synthesis of reduced GO and graphene-based nanomaterials. These findings are promising for the development of an electrochemical approach for the direct fabrication of reduced GO electrodes without additional modifications in electrochemical applications. (C) 2013 Elsevier B.V. All rights reserved.