Hilal Demir Kivrak - Van Yuzuncu Yıl University, Faculty of Engineering, Chemical Engineering Department, ۶۵۰۰۰, Van, Turkey.
Nahit Aktaş - Van Yuzuncu Yıl University, Faculty of Engineering, Chemical Engineering Department, ۶۵۰۰۰, Van, Turkey.
Aykut Caglar - Van Yuzuncu Yıl University, Faculty of Engineering, Chemical Engineering Department, ۶۵۰۰۰, Van, Turkey.

Herein, graphene oxide is produced by electrochemical oxidation method from graphite rod to examine its hydrogen peroxide sensing ability. The electrochemically produced graphene oxide is characterized by SEM and XRD. A few layers of Graphene Oxide(GO) sheets and corrugations in graphene sheets appeared intensely crumpled and folded into a typical wrinkled structure after electrochemical oxidation. Electrochemical measurements are carried out cyclic voltammetry (CV) and chronoamperometry (CA) on graphene oxide and graphite. As a result, graphene oxide exhibits the highest performance toward electrochemical oxidation of H۲O۲ in ۰.۱ M phosphate buffered solution (PBS). In addition, CA is employed for the determination of H۲O۲ at the applied potential of ۰.۰ V (vs. Ag/AgCl). The electrochemical sensor exhibits fast and selective responses to H۲O۲ concentration.

Electrochemical, Graphene oxide, Graphite, hydrogen peroxide, Nonezymatic sensor