Electrodeposition of cobalt-copper hexacyanoferrate modified electrodes for electrocatalytic oxidation of ascorbic acid

Abstract

A cobalt-copper hexacyanoferrate (Co-Cu HCF) film was electrodeposited on an indium tin oxide glass (ITO Glass) in the presence of ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) by cyclic voltammetry (CV) The effect of EDTA-2Na is to decrease the effective concentration of Co2+ and Cu2+ which resulting in a homogeneous precipitation process and therefore forming the uniform nanoparticles of Co-Cu HCF To optimize deposition conditions parameters we discussed including the concentration of EDTA-2Na pH value of deposition scan cycles and annealing process The cobalt-copper hexacyanoferrate modified electrode (Co-Cu HCF/ITO) shows electrocatalytic activity toward the oxidation of ascorbic acid (AA) in 0 1 M potassium nitrate solution The Co-Cu HCF/ITO electrodes have been characterized by using X-ray diffractometer (XRD) scanning electron microscopy (SEM) energy-dispersive X-ray spectroscopy (EDS) The electrochemical properties were tested by cyclic voltammetry

Date of Award	2019
Original language	English
Supervisor	Thou-Jen Whang (Supervisor)