Journal of Industrial and Engineering Chemistry, Vol.20, No.6, 4327-4331, November, 2014
Eco-friendly one-pot synthesis of gold decorated reduced graphene oxide using beer as a reducing agent
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A facile, eco-friendly and economical approach was demonstrated for the synthesis of gold-decorated reduced graphene oxide nanocomposites (rGO-Aunano) using beer as a reducing agent via a hydrothermal method. The phenolic compounds of beer play a key role in the reduction of graphene oxide and the gold precursor. The obtained rGO-Aunano was characterized by X-ray diffraction, UV-vis absorption spectroscopy, electron microscopy, atomic force microscopy and the electrochemical impedance spectroscopy. Analysis revealed that the electron-transfer resistance of rGO-Aunano/GCE was much lower than that of the GCE and GO/GCE. The proposed nanocomposites have excellent electrocatalytical properties for catalytic reduction of O2 in solution.
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