Synthesis and Characterization of Plant Derived Copper Oxide Nanoparticles and Their Application towards Oxygen Reduction Reaction

摘要

In this work copper oxide nanoparticles(CuONPs)are prepared from precursor CuSO4.5H2O using plant leaves extract(PEE)of Eranthemum pulchellum(E.pulchellum).The synthesized CuONPs are characterized by ultraviolet visible(UV-vis)spectroscopy,Fourier transform infrared(FTIR)spectroscopy,X-ray diffraction(XRD)and transmission electron microscopy(TEM).CuONPs are distorted spherical in shape,with the sizes ranging from 5 to 17 nm.PEE and CuONPs are coated on glassy carbon(GC)electrode and abbreviated as GC/PEE and GC/CuONPs,respectively.The modified electrodes GC/PEE and GC/CuONPs are characterized with cyclic voltammetry(CV)techniques.The modified electrode GC/CuONPs exhibits good electrocatalytic activity for oxygen reduction reaction(ORR).GC/CuONPs also shows excellent operational stability up to 1000 CV cycles.