Сitric acid influence on electroreduction processes in low concentrated Cu(NO3)2 solutions

Alla Pravda; Vasil Larin

doi:10.17721/fujcV5I2P136-143

Сitric acid influence on electroreduction processes in low concentrated Cu(NO3)2 solutions

Alla Pravda, Vasil Larin

Abstract

Physico-chemical regularities citric acid influence on processes of copper and nitrate-ions reduction in low concentrated nitrate solutions were established. An influence of pH value on inhibitor action of low concentrations of the additive according to cathode reduction reaction of nitrate-ions, on kinetics of copper electrodeposition, on structure of the precipitates obtained was shown. Polarization measurements show us changes of copper electrodeposition at introduction of citric acid in Cu(NO₃)₂solution. By the methods of traced elements and extraction into aqueous phase the reversible inclusion complexes into electrolytic copper, was established that proves participation of complexes in cathode process.

Keywords

copper electrodeposition; citric acid; influence of pH; electroreduction of nitrate ions

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DOI: https://doi.org/10.17721/fujcV5I2P136-143

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ISSN 2312-3222 (Online)

French-Ukrainian Journal of Chemistry is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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