Electrochemical sensing of hydrogen peroxide based on nano γ-Fe2O3 modified glassy carbon electrode

Abstract

Maghemite (γ-Fe2O3) nanoparticles were prepared using chemical synthesis method and used for sensing the hydrogen peroxide. The morphology of the γ-Fe2O3 nanoparticles was characterized by scanning electron microscopy. The γ-Fe2O3 nanoparticles were used to modify glassy carbon electrode (GCE) to form nano γ-Fe2O3 modified GC electrode for electrochemical sensing of hydrogen peroxide (H2O2). A potential controlled cyclic voltammetric (CV) technique was performed to sense hydrogen peroxide using nano γ-Fe2O3 modified GC electrode. The nano γ-Fe2O3 modified GC electrode showed excellent electrocatalytic ability towards H2O2 in 0.1M KCl supporting electrolyte. A significant enhancement in anodic peak current was observed for the nano γ-Fe2O3 modified GC electrode than those of bare electrode. The electrochemical characteristics of hydrogen peroxide on nano γ-Fe2O3 modified GC electrode  had been explored in this research communication.