Abstract
The possibility of obtaining nanodispersed zinc oxide by electrolysis on alternating current of industrial frequency was shown.The parameters of electrolysis, influencing the electrochemical oxidation of zinc in neutral solutions and the rate of formation of the zinc oxide powder were studied.The effect of electrolyte composition on the electrode process at a zinc electrode was investigated using polarization measurements.The electrochemical behavior of the zinc electrode in neutral sodium salt solutions in the concentration range of 0.4-4.0mol/l, at temperature range of 20-50 °C, and at 5 to 100 mV/s sweep rates was studied.The anodic potentiodynamic curves in 0.4 mol/l NaClO 4 , CH 3 COONH 4 , Na 2 SO 4 , NaNO 3 , and NaCl solutions were recorded.From the polarization curves, it was established that the rate of anodic ionization of zinc increases in the following series: CH 3 COONH 4 < NaClO 4 < NaNO 3 < Na 2 SO 4 < NaCl.It has been stated that during anodic oxidation of zinc, zinc oxides and hydroxocomplexes are the by-products of the electrode process.A comprehensive study of zinc oxide powders obtained by electrosynthesis using modern physicochemical methods (electron microscopy, X-ray phase analysis, IR spectroscopy, and thermogravimetry) was carried out, which made it possible to establish their qualitative composition and particle sizes that make up these compounds.