THE INFLUENCE OF CATHODE ACTIVATION ON THE EVOLUTION OF THE SURFACE MORPHOLOGY OF CRYSTALS FORMED IN THE PROCESS OF ELECTROCHEMICAL CRYSTALLIZATION OF CUPRUM


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Abstract

The development of modern technological processes of chemical materials production and wastewater purification from toxic contaminants requires the creation of new metal materials having specified physical and chemical properties. Within the development of such functional materials, special emphasis is laid on the extension of their specific surface and the number of active centers of catalysis. There is also the necessity of raise of nonprecious metals activity by means of their surface morphology change and the creation of the high concentration of the specific type of defect structures that are the active centers of catalysis.

During the study, for the creation of cuprum defect structures, the author used the method of electrodeposition with the mechanical activation of the cathode and growing on it crystals with abrasive particles. To forecast the possibilities of suggested method, the detailed study of the processes of defect structures producing and evolution during the electrochemical crystallization of cuprum is necessary. The paper covers this study.

The paper presents the results of the study of the influence of cathode-micronet mechanical activation with the abrasive particles on the peculiarities of the evolution of surface morphology of cuprum crystals growing in the process of their electrochemical crystallization. The paper gives the results of electro-deposition with and without mechanical activation with the same technological parameters. It is shown that the cathode mechanical activation itself at the initial stages of the electrochemical crystallization process affects significantly the morphology of cuprum surface and stimulates the formation and the growth of larger crystals in the form of cones, pentagonal pyramids, and cones with developed surface. 

The study showed that the mechanical activation at the initial stage of electrodeposition allows the creation of developed surface of cuprum. The preliminary test revealed high efficiency of such material with the developed surface as the catalyst for the wastewater aftertreatment from toxic substances.     

About the authors

Aleksey Maksimovich Gryzunov

Togliatti State University, Togliatti

Author for correspondence.
Email: GryzunovAleksey@gmail.com

postgraduate student of Chair “Nanotechnologies, material engineering and mechanics”

Russian Federation

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