One-Pot Microwave-Assisted Synthesis of Reduced Graphene Oxide/Iron Oxide Nanocomposite Catalyst for the Oxygen Reduction Reaction

We report on a reliable and eco-friendly procedure for the synthesis of reduced graphene oxide/Fe2O3 nanocomposite via a fast microwave-assisted one-pot reduction and functionalization of graphene oxide. Morphology, structure and electrochemical behavior of the as-prepared material were characterized through different techniques. Structural and morphological characterizations evidenced the formation of nanocomposite sheets, with iron oxide nanoparticles integrated in the graphene matrix. Physico-chemical analysis revealed the functionalization of the graphene also by the presence of nitrogen atoms that show synergistic catalysis effects with Fe2O3. Electrochemical characterizations put in evidence the ability of such material to exploit competitive performances for the oxygen reduction reaction, comparable to Pt-based catalysts, commonly used for fuel cell applications.