Pigeon-Excreta-Mediated Synthesis of Reduced Graphene Oxide (rGO)/CuFe2O4 Nanocomposite and Its Catalytic Activity toward Sensitive and Selective Hydrogen Peroxide Detection

A copper ferrite (CuFe2O4)/reduced graphene oxide (rGO) nanocomposite was developed via a one-pot strategy by using environmentally favorable pigeon excreta as a reducing and stabilization agent. The obtained micrographs substantiated that the spherical-shaped CuFe2O4 nanostructures were uniformly anchored over the rGO sheets. The mechanism involved in the simultaneous reduction of GO sheets and Cu2+/Fe2+ ions by using the pigeon excreta is explicated with the number of structural characterizations. The electrocatalytic activities of as-prepared nanostructures for nonenzymatic H2O2 detection were evaluated under the neutral conditions. The as-prepared rGO/CuFe2O4 nanocomposite exhibited the high sensitivity of 265.57 μA mM–1 cm–2, low detection limit of 0.35 μM and wide linear range from 1 μM to 11 mM toward H2O2 sensing, because of the systematic arrangement of metallic active sites supported via the active rGO support. The robust structures developed in the prepared composite exhibited the excellent sel...