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”

Россия

References

  1. Sabanov V.Kh., Dzaraeva L.B. Sposob polucheniya oksida magniya s razvitoy udelnoy poverkhnostyu [Method of producing magnesium oxide with evolved specific surface]. Patent RF no. 2438976, 2012.
  2. Morozov M.V., Gilmutdinov A.Kh. Sposob polucheniya nikelevoy volokonnoy elektrodnoy osnovy s razvitoy poverkhnostyu volokon dlya khimicheskikh istochnikov toka i poluchennaya etim sposobom nikelevaya volokonnaya osnova elektroda [Method of producing nickel fiber electrode base with evolved surface of fibers for chemical current supplies and produced by this method nickel fiber base of electrode]. Patent RF no. 2475896, 2011.
  3. Vikarchuk A.A., Gryzunova N.N., Dorogov M.V. Complex technique of production of metal-based nanoporous material. Materialovedenie, 2011, no. 8, pp. 48–51.
  4. Yasnikov I.S., Vikarchuk A.A. Alternative method of the opening of cavities in small icosahedral electrolytic-metal particles. Journal of experimental and theoretical physics letters (JETP Letters), 2007, vol. 86, no. 9, pp. 612–614.
  5. Gryzunova N.N., Vikarchuk A.A., Shafeev M.R., Romanov A.E. Morphological and phase transformations in nickel coatings on stainless steel in temperature fields. Materials Physics and Mechanics, 2014, vol. 21, no. 2, pp. 119–125.
  6. Gryzunova N.N., Denisova A.G., Yasnikov I.S., Vikarchuk A.A. Preparation of Materials with a Developed Surface by Thermal Treatment and Chemical Etching of Electrodeposited Icosahedral Small Copper Particles. Russian Journal of Electrochemistry, 2015, vol. 51, no. 12, pp. 1176–1179.
  7. Gryzunova N.N., Vikarchuk A.A., Shafeev M.R., Gryzunov A.M. Creation of the developed surface of mesh metal carriers made of stainless steel. Vektor nauki Tolyattinskogo gosudarstvennogo universiteta, 2014, no. 4, pp. 25–29.
  8. Vikarchuk A.A., Romanov A.E. Principal physics of getting fundamentally new cuprum-based catalysts. Fundamentalnye problemy sovremennogo materialovedeniya, 2014, no. 11, pp. 87–98.
  9. Gryzunova N.N., Vikarchuk A.A., Shafeev M.R. Creating high surface in the metal mesh carrier. Pisma o materialakh, 2015, vol. 5, no. 2, pp. 211–214.
  10. Gryzunova N.N., Vikarchuk A.A. On the extend of specific surface of metal catalysts and carriers for them. Novosti materialovedeniya. Nauka i tekhnika, 2015, no. 1, pp. 6–11.
  11. Vikarchuk A.A., Vlasenkova E.Yu., Gryzunova N.N. Fabrication of nanosized metallic objects by thermal processing of pentagonal particles and nanotubes. Izvestiya Samarskogo nauchnogo tsentra Rossiyskoy akademii nauk, 2008, no. S6, pp. 44–49.
  12. Gryzunova N.N. The change of morphology surfaces and phase composition of the metal carrier. Nauchniy almanakh, 2015, no. 6, pp. 113–119.
  13. Vikarchuk A.A., Volenko A.P., Bondarenko S.A., Gamburg Yu.D. Disclination nature of pentagonal crystals that form during copper electrocrystallization. Russian journal of electrochemistry, 2004, vol. 40, no. 2, pp. 180–187.
  14. Vikarchuk A.A., Gryzunova N.N., Denisova D.A., Dovzhenko O.A., Tyurkov M.N., Tsybuskina I.I., Yasnikov I.S. New metal functional materials consusting of pentagonal particles, crystals and tubes. P. 1. Mechanisms of formation and peculiarities of the structure of pentagonal particles and crystals. Zhurnal funktsionalnykh materialov, 2008, no. 5, pp. 163–174.
  15. Vikarchuk A.A., Gryzunova N.N. Spiral-disc lination mechanism of forming the filamentary pentagonal crystals in process of electrocrystallization of metals. Materialovedenie, 2008, no. 6, pp. 7–12.
  16. Vikarchuk A.A., Gryzunova N.N. Mechanism of formation of pentagonal microtubes from rods during electrodeposition. Materialovedenie, 2009, no. 5, pp. 28–31.
  17. Gryzunova N.N., Vikarchuk A.A. Features of formation threadlike pentagonal crystals on the defects of the substrate having disclination the nature. Vektor nauki Tolyattinskogo gosudarstvennogo universiteta, 2009, no. 4, pp. 9–13.
  18. Gryzunova N.N., Vikarchuk A.A., Tyurkov M.N. Production and investigation of electrolytic energy-intensive materials with defect structure and developed surface. Deformatsiya i razrushenie materialov, 2016, no. 2, pp. 13–19.
  19. Gryzunova N.N., Vikarchuk A.A., Bekin V.V., Romanov A.E. Creating a developed surface of copper electrolytic coatings via mechanical activation of the cathode with subsequent thermal treatment. Izvestiya Rossiyskoy akademii nauk. Seriya fizicheskaya, 2015, vol. 79, no. 9, pp. 1238–1242.
  20. Gryzunova N.N., Vikarchuk A.A., Bekin V.V., Romanov A.E. Creating a developed surface of copper electrolytic coatings via mechanical activation of the cathode with subsequent thermal treatment. Bulletin of the Russian Academy of Sciences: Physics, 2015, vol. 79, no. 9, pp. 1093–1097.
  21. Vikarchuk A.A., Gryzunova N.N., Dorogov M.V., Priezzheva A.N., Romanov A.E. Functional metallic materials with fragmented structure and developed surface. Metallovedenie i termicheskaya obrabotka metallov, 2016, no. 1, pp. 16–21.
  22. Maltsev A.V., Gryzunova N.N., Vikarchuk A.A., Gryzunov A.M. Creation of evolved surface of cuprum by means of mechanical activation method. Sbornik tezisov VIII mezhdunarodnoy konferentsii “Fazovye prevrashcheniya i prochnost’ kristallov”. Moscow, 2014, p. 113.

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