Effect of Surfactants on the Reduction of Cadmium(II) Ions on Cadmium Electrode

M.K. Kassymova, Mikhail Nauryzbayev, Aigul Mamyrbekova, Gulkhan Zhylysbayeva, Aizhan Mamyrbekova

2019

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DOI 10.1134/s0036024419050170
Data confidence 70 medium
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Abstract

Abstract The effect high molecular weight water-soluble surfactants with different functional groups have on the electroreduction of cadmium(II) ions on a cadmium electrode in various electrolytes is studied. A copolymer of methacryloylaminophenol with acrylic acid, a leather waste hydrolyzate, and a copolymer of monoethanolamine with vinyl ether acetate are used as surfactants. The electrolytes that are used are 1 M KCl, KBr, KNO3, HCOONa, NH2SO3H, 0.5 M Na2SO4, and 0.35 M Na3C6H5O7 · 2H2O. It is shown that in 1.0 M KCl or KBr solutions, there is no inhibition of the electroreduction of cadmium(II) ions by the adsorption layers of surfactants. It is found that the inhibitory effect of polymers on the electroreduction of cadmium(II) ions in different background electrolytes increases in the order KCl > KBr > KNO3 > NH2SO3H > Na2SO4 > Na3C6H5O7 · 2H2O > HCOONa.