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

Maghemite (γ-Fe 2 O 3 ) nanoparticles were prepared using chemical synthesis method and used for sensing the hydrogen peroxide. The morphology of the γ-Fe 2 O 3 nanoparticles was characterized by scanning electron microscopy. The γ-Fe 2 O 3 nanoparticles were used to modify glassy carbon electrode (GCE) to form nano γ-Fe 2 O 3 modified GC electrode for electrochemical sensing of hydrogen peroxide (H 2 O 2 ). A potential controlled cyclic voltammetric (CV) technique was performed to sense hydrogen peroxide using nano γ-Fe 2 O 3 modified GC electrode. The nano γ-Fe 2 O 3 modified GC electrode showed excellent electrocatalytic ability towards H 2 O 2 in 0.1M KCl supporting electrolyte. A significant enhancement in anodic peak current was observed for the nano γ-Fe 2 O 3 modified GC electrode than those of bare electrode. The electrochemical characteristics of hydrogen peroxide on nano γ-Fe 2 O 3 modified GC electrode  had been explored in this research communication.