Synthesis and characterization of copper oxide nanoparticles: In the study of voltammetric response of biomolecules

Resumo

Copper oxide nanoparticles synthesized via hydrothermal method and used to modify a carbon paste electrode are reported. The structural characterization of nanopowder by XRD clearly shows the formation of monoclinic phase with high crystallinity. The morphological structure is characterized by field emission scanning electron microscope shows the formation of flake like structures. The modified electrode is used for the determination of dopamine and ascorbic acid separately using cyclic voltammetry. The voltammograms obtained during the oxidation studies revealed that nano CuO exhibits better catalytic function towards the oxidation of dopamine and ascorbic acid. The overlapping voltammetric response of both the biomolecules at the bare electrode gets resolved into well defined voltammetric peaks with enhanced oxidation currents.