Electrodeposition of Gold Nanoparticles on Electrochemically Reduced Graphene Oxide for Sensitive Hydrazine Electrochemical Determination in Agriculture Wastewater

Abstract

In this contribution, reduced graphene oxide-gold nanoparticles nanocomposite (RGO-AuNPs) was prepared by electrochemical reduction of graphene oxide (GO) at an indium tin oxide (ITO) electrode followed by an electrodeposition process of loading AuNPs on its surface. The electrochemical reduction and deposition progress were characterized by various techniques including SEM, XRD, UV-vis spectroscopy and Raman spectroscopy. As-prepared RGO-AuNPs modified ITO was then successfully applied for electrochemical determination of hydrazine. Results indicate that the RGO is a perfect platform for AuNPs deposition. The composite material exhibits a superior electrocatalytic property towards detection of hydrazine. Moreover, the proposed sensor was successfully used for real water sample analysis.