CARBON PASTE ELECTRODES MODIFIED BY VARIOUS ORGANIC REAGENTS
Abstract
A procedure is described for manufacturing a composite electrode based on carbon graphite powder and manganese dioxide nanoparticles deposited on its surface, obtained during the reduction reaction of potassium permanganate with manganese (II) ions from aqueous solutions. Using the methods of scanning microscopy and X-ray diffraction analysis, the success of the modification of carbon powder with nanoparticles of manganese dioxide with sizes of 20-55 nm was proved. For bulk modification of the electrode, paraffin was used as a binder. Design features and a method for manufacturing an electrode for determining hydrogen peroxide are described. Electrochemical studies of the behavior of the composite MnO2/C electrode were carried out using cyclic and differential-pulse voltammetry methods.