Processes at platinum electrodes during the cathode polarization in alcohol erbium nitrate solution

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The processes at platinum electrodes during the cathode polarization in an alcohol solution of erbium nitrate are discussed. The current density maxima on the cathode branch of voltammograms were found to correspond to the potentials of the hydrogen reduction reactions. The gel-like deposit Er(OH)x(NO3)y(С2Н5О)z · nH2O, x + y + z = 3, formed during the cathode treatment was shown to be not a product of the electron exchange between the cathode and the solution components. The following formation mechanism of the erbium-containing deposit has been suggested. First, the electrochemical process of the hydrogen cathode reduction is implemented. This process leads to the ionic unbalance and causes the alkalinization of the cathode space. This creates conditions for the chemical process of the gel-like erbium hydroxide formation, which is physically adsorbed on the cathode surface as a precipitate.

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Sobre autores

S. Volchek

Belarusian State University of Informatics and Radioelectronics

Autor responsável pela correspondência
Email: volchek@bsuir.by
Belarus, Minsk

V. Yakovtseva

Belarusian State University of Informatics and Radioelectronics

Email: yakovtseva@yahoo.com
Belarus, Minsk

Bibliografia

  1. Reisfeld, R., Application of luminescence spectroscopy in new materials for solar energy utilization, Online Elsevier Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, 2017. https://doi.org/10.1016/B978-0-12-409547-2.11688-9
  2. Kenyon, A.J., Erbium in silicon, Semicond. Sci. Technol., 2005, vol. 20, p. R65.
  3. Феклистов, К.В., Абрамкин, Д.С., Ободников, В.И., Попов, В. П. Легирование кремния эрбием методом имплантации атомов отдачи. Письма в ЖТФ. 2015. Т. 41. № 16. С. 52. [Feklistov, K.V., Abramkin, D.S., Obodnikov, V.I, and Popov, V.P., Doping silicon with erbium by recoil implantation, Techn. Phys. Lett., 2015, vol. 41 (8), p. 788.] https://doi.org/10.1134/S1063785015080209
  4. Kukharchyk, N., Pal, S., Rödiger, J., Ludwig, A., Probst, S., Ustinov, A.V., Bushev, P., and Wieck, A.D., Photoluminescence of focused ion beam implanted Er3+: Y2SiO5 crystals, Phys. Status Solidi (RRL) – Rapid Res. Lett., 2014, vol. 8 (10), p. 880. https://doi.org/10.1002/pssr.201409304
  5. Drozdov, M.N., Latukhina, N.V., Stepikhova, M.V., Pokoeva, V.A., and Surin, M.A., Oxygen and erbium distribution in diffusion doped silicon, Modern Electronic Mater., 2016, vol. 2, p. 7. https://doi.org/10.1016/j.moem.2016.08.001
  6. Kimura, T., Yokoi, A., Horiguchi, H., and Saito, R., Electrochemical Er doping of porous silicon and its room-temperature luminescence, Appl. Phys. Lett., 1994, vol. 65, p. 983. https://doi.org/10.1063/1.112169
  7. Pourbaix, M. Atlas of Electrochemical Equilibria in Aqueous Solutions. Second English Edition. National Association of Corrosion Engineer, 1974, 645 p.
  8. Методы измерения в электрохимии: в 2 т., под ред. Ю. А. Чизмаджева. М.: Мир, 1977. Т. 1. 588 с.
  9. Фритц, Дж., Шенк, Г. Количественный анализ. Пер. с англ. Т. Н. Шеховцовой, О. А. Шпигуна; под ред. Ю. А. Золотова. М.: Мир, 1978. 557 с.
  10. Bard, A.J. and Faulkner, L. R. Electrochemical Methods: Fundamentals and Applications, 2nd ed.; New York: Wiley, 2001, 850 p.
  11. The Rare Earth Elements Fundamentals and Applications, Atwood D. A., Ed., John Wiley & Sons Ltd, West Sussex, UK, 2012, 629 p.
  12. Handbook on the physics and chemistry of rare earths, vol.01, Gschneidner K. A., Jr. et al. Eds., Elsevier, 1978, 900 p.

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2. Fig. 1. Design of an electrochemical cell for studying cathode processes on platinum electrodes: 1 – working electrode (cathode), 2 – reference electrode, 3 – auxiliary electrode (anode), 4 – glass beaker.

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3. Fig. 2. Voltamgram with linear potential sweep in the case of reversible charge transfer.

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4. Fig. 3. Time dependence of the potential of a platinum electrode in a 0.1 M alcohol solution of Er(NO₃)₃ without applying an external potential.

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5. Fig. 4. Voltamgram of a platinum electrode in a 0.1 M alcohol solution of Er(NO₃)₃.

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6. Fig. 5. Cyclic voltammograms of a platinum electrode in a 0.1 M alcohol solution of Er(NO₃)₃, recorded in the range from +400 to –800 mV at different potential scan rates.

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7. Fig. 6. SIMS distribution profiles of elements in erbium-containing film.

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