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  3. Volume 17, Number 2, 2023
  4. Gold-Reducing Cathode Reactions Kinetics in Acid Thiourea Electrolytes

Gold-Reducing Cathode Reactions Kinetics in Acid Thiourea Electrolytes

JCCT.
2023;
Volume 17, Number 2
: pp. 237 - 243
https://doi.org/10.23939/chcht17.02.237
Authors:
  1. Olha Smirnova
  2. Nataliia Rudachenko
  3. Oleksii Pylypenko
1
National Technical University “Kharkiv Polytechnic Institute”
2
National Technical University "Kharkiv Polytechnic Institute"
3
O.M.Beketov National University of Urban Economy in Kharkiv

The kinetics of cathode reactions occurring on a gold electrode in acidic thiourea-citrate electrolytes has been studied. Using classical electrochemical methods (potentiometry, chronovoltammetry, electrogravimetry) and graphic-analytical calculations, the following were established: the instability constant of gold complexes, the type of kinetics, the nature of the delayed stage, and the main kinetic characteristics of the electrochemical reaction during gold deposition.

gold (I) complex
thiourea
citric acid
cathode polarization
electrolytic deposition
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