Stets O. Electrochemical Properties of Copper Complexes with Acrylic Acid and its Derivatives

Object of the research is the process of copper ions electroreduction from sulfuric acid solutions, which are contain acrylic acid or its derivatives. Research objective is detection of the basic regularities of interaction of the products of Cu(II)-ions electroreduction with acrylic acid and its derivatives, as well as the ascertainment of the mechanism of these substances influence on the stages of discharge and crystallization and structure of the cathodic deposits. Methods of the research are quantum-chemical modeling using DFT-methods, voltammetry with linear potential scan and cyclic voltammetry, chronopotentiometry, chronoamperometry, infrared spectroscopy, X-ray diffraction, scanning electron microscopy. The mechanism of Cu(II) electroreduction in presence of acrylic acid and its derivatives has been specified. It has been shown that the process occurs via two parallel routes. It has been sown that clusters of 3 - 4 copper atoms correspond to the critical nucleus size when copper electroreduction passes from aquacomplexes. In presence of acrylic acid or acrylamide processes of formation and growth of clusters get thermodynamic and steric complications. That results in significant change of nature of crystallization stage and decreasing of critical nucleus size. It has been disclosed that as the result of acrylic acid and its derivatives interaction with copper atoms organic components accumulates in the generated deposits in a large amount. Introduce the results is planned. Area of employment is electrodeposition of metals and organometallic materials.