Journal article

Effect of pH on the Reduction of Graphene Oxide on its Structure and Oxygen Reduction Capabilities in the Alkaline Media

DE Glass, GK Surya Prakash

Electroanalysis | Published : 2018

Abstract

The reduction of many catalysts in aqueous media is usually carried out in a basic environment using most reducing agents. Graphene oxide (GO) was synthesized and reduced by sodium borohydride in an aqueous solution over a wide spectrum of pH values ranging from 1 to 13. X-ray diffraction (XRD) and infrared spectroscopy (FTIR) confirmed the reduction of the graphene oxide at each respective pH value. Raman and X-Ray photoelectron spectroscopy (XPS) spectra displayed an increased repair in the graphitic sp2 domain of the catalysts as the pH value of the solution was increased. Half-cell electrochemical testing in basic media showed higher oxygen reduction capabilities in the catalysts that we..

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University of Melbourne Researchers

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