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Solid-phase electrochemical reduction of graphene oxide films in alkaline solution

Wan J Basirun2*, Mehran Sookhakian1, Saeid Baradaran3, Mohammad R Mahmoudian4 and Mehdi Ebadi1

Author affiliations

1 Department of Chemistry, University Malaya, Kuala Lumpur 50603, Malaysia

2 Nanotechnology & Catalysis Research Centre, Institute of Postgraduate Studies, University Malaya, Kuala Lumpur 50603, Malaysia

3 Department of Mechanical Engineering, Faculty of Engineering, University Malaya, Kuala Lumpur 50603, Malaysia

4 Department of Chemistry, University of Farhangian, Tehran 15916, Iran

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Citation and License

Nanoscale Research Letters 2013, 8:397  doi:10.1186/1556-276X-8-397

Published: 24 September 2013

Abstract

Graphene oxide (GO) film was evaporated onto graphite and used as an electrode to produce electrochemically reduced graphene oxide (ERGO) films by electrochemical reduction in 6 M KOH solution through voltammetric cycling. Fourier transformed infrared and Raman spectroscopy confirmed the presence of ERGO. Electrochemical impedance spectroscopy characterization of ERGO and GO films in ferrocyanide/ferricyanide redox couple with 0.1 M KCl supporting electrolyte gave results that are in accordance with previous reports. Based on the EIS results, ERGO shows higher capacitance and lower charge transfer resistance compared to GO.

Keywords:
Carbon materials; Thin films; FTIR; Raman