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)2 solution. 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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References


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

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