CYCLIC VOLTAMMETRIC STUDY OF CuO IN AQUEOUS AND NONAQUEOUS SOLVENTS

Abstract

A series of cyclic voltammograms were conducted by varying the sweep potential between -1 and +1.2 V of copper oxide (CuO) mixed with graphite paste. In the first anodic cycle one anodic peak was observed and in the reverse cycle two cathodic peaks appear. The peaks increase in height after consequent cycles. It was observed that in different solvent systems these trends are similar with slight changes in the potential and current density values. The above result indicates the reaction to proceed through a two electrons process. Various parameters like scan rate, scan reversal, concentration, pH, etc. were studied in both aqueous and non-aqueous solvent systems. The voltammograms obtained indicate the quasi reversible nature of copper oxide.