The effect of different factors on electrochemical obtaining of alloys Re-Te-Cu

  • Elza Salakhova Institute of Catalysis and Inorganic Chemistry of Azerbaijan National Academy of Sciences, AZ1143, H. Javid Ave. 113, Baku, Azerbaijan https://orcid.org/0000-0001-6014-707X
  • Dilgam Tagiyev Institute of Catalysis and Inorganic ChemistryInstitute of Catalysis and Inorganic Chemistry of Azerbaijan National Academy of Sciences, AZ1143, H. Javid Ave. 113, Baku, Azerbaijan
  • Parvana Kalantarova Institute of Catalysis and Inorganic Chemistry of Azerbaijan National Academy of Sciences, AZ1143, H. Javid Ave. 113, Baku, Azerbaijan https://orcid.org/0000-0002-5348-936X
  • Ramila Huseynova Institute of Catalysis and Inorganic Chemistry of Azerbaijan National Academy of Sciences, AZ1143, H. Javid Ave. 113, Baku, Azerbaijan
  • İrana Cabbarova Institute of Catalysis and Inorganic Chemistry of Azerbaijan National Academy of Sciences, AZ1143, H. Javid Ave. 113, Baku, Azerbaijan
Keywords: Rhenium alloys, ternary alloys, thin coatings, electrochemical deposition, electrolyte composition
Graphical Abstract

Abstract

Based on the study of volt-ampere dependencies during electroreduction of rhenium (VII), tellurium (IV) and copper (II) ions from hydrochloric acid electrolyte on Pt electrode, the conditions of deposition of nano-coatings of ternary Re-Te-Cu alloy were determined. The influence of various factors such as amounts of individual components and total con­cen­tra­tions of components in the electrolyte solution, temperature, concentration of hydro­chloric acid, etc., on the composition and quality of coatings was studied. It was establ­i­shed that with the increase of rhenium concentration in the electrolyte, as well as increase of temperature, the rhenium content in deposits increased. The morphology of films depo­sited on platinum substrate was studied using the scanning electron microscopy. Based on the experimental data, the following electrolyte composition (mol/l) is recommended for obtaining the semiconductor Re-Te-Cu alloy containing 40-50 wt.% Re: (6.9·10-4-6.9·10-3) KReO4 + (9·10-4-1.8·10-2) TeO2 + (6·10-4-1.2·10-2) CuCl2·2H2O +2 HCl, T = 75 °C.

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Published
14-03-2021
Section
Electrochemical Engineering