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

Kassymova, M.K.; Наурызбаев, М. К.; Mamyrbekova, Aigul; Zhylysbayeva, G. N.; Mamyrbekova, Aizhan

doi:10.1134/s0036024419050170

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…The accelerating effect of halogen ions on electrode processes is well known. Na 3 C 6 H 5 O 7 • 2 H 2 O and HCOONa were chosen from among the organic acids, since they are inert; the NO -3 ion is a weakly adsorbable anion [18]. It was of interest to use 1.0 M NH 2 SO 3 H as the background electrolyte for comparison with other electrolytes, given that the inhibitory effect of the SO 3 Hion in the presence of surfactants is strong.…”

Section: Methodsmentioning

confidence: 99%

Electroreduction of lead(II) ions on lead electrode in the presence of surfactants and different electrolytes

Mamyrbekova¹,

Kassymova²,

Mamyrbekova³

et al. 2020

ScienceAsia

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Section: Methodsmentioning

confidence: 99%

Electroreduction of lead(II) ions on lead electrode in the presence of surfactants and different electrolytes

Mamyrbekova¹,

Kassymova²,

Mamyrbekova³

et al. 2020

ScienceAsia

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“…In recent years increasing attention has been drawn to studies on the synthesis of ultrafine metal powders with given structure and dispersion, due to which they can be used to create new effective materials of various purposes. A large number of works is focused on the study of electrochemical methods of production of finely dispersed metal powders at direct current, requiring the use of additional equipment for rectifying alternating current, the need to use chemically resistant electrodes in various environments, and in some cases, use of membranes to separate the electrode spaces, thereby complicating the process [1][2][3]. Current method is also distinguished by a complex electrolyte composition, which contains salts of metals under consideration, various additives, including organic compounds [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Study of Kinetics of Copper Oxidation by Electrolysis Under Non-Stationary Conditions

Mamyrbekova¹,

Mamyrbekova²,

Kassymova³

et al. 2021

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Data on the study of the kinetics and mechanism of copper electro-oxidation -reduction processes in alkaline and neutral solutions were obtained in this work. Patterns of the electrochemical oxidation of copper using alternating current were established. Based on the data of polarisation measurements kinetic parameters were calculated: the heterogeneous rate constant, the effective activation energy of copper electro-oxidation, which allow to establish the course of the metal oxidation process in alkaline and neutral environments and its characteristics. Potentiodynamic measurements in alkaline solutions at a copper anode indicate the formation of Cu2O, CuO и Cu(OH)2. Anodic dissolution of copper in neutral salt solutions includes two main stages: the formation of Cu(I) and Cu(II) ions. It was found that the product of oxidation at high potentials is the Cu(II) ion. The nature of the anion electrolyte affects the rate of copper anodic oxidation, while the process occurs more efficiently in solutions of sulfate and sodium chloride and is accompanied by significant polarisation. Based on the study of kinetics the possibility of obtaining powders of metal oxide was shown, which further allowed to determine the parameters of the electrolysis process in non-stationary conditions in order to obtain highly dispersed materials based on copper oxides with specific physico-chemical properties.

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“…A temperature-kinetic analysis of the polarization curves in the range T = 298-328 K with no surfactants was performed using the technique proposed in [20]. The temperature-kinetic curves for the discharge of lead ions(II) without surfactants and with surfactants are linear and independent of the overvoltage.…”

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confidence: 99%

Effect of Surfactants on the Reduction of Lead(ii) Ions on Lead Electrode

Bayeshov¹,

Mamyrbekova²,

Kassymova

et al. 2020

Series Chemistry and Technology

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The effect high molecular weight water-soluble surfactants with different functional groups have on the electroreduction of lead(II) ions on a lead 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 lead(II) ions by the adsorption layers of surfactants. It is found that the inhibitory effect of polymers on the electroreduction of lead(II) ions in different background electrolytes increases in the order KCl > KBr > Na3C6H5O7.2H2O > Na2SO4 > KNO3 > HCOONa > NH2SO3H. Key words: lead ions, electroreduction, surfactants, electrolyte, lead electrode, exchange current.

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

Cited by 3 publications

References 6 publications

Electroreduction of lead(II) ions on lead electrode in the presence of surfactants and different electrolytes

Electroreduction of lead(II) ions on lead electrode in the presence of surfactants and different electrolytes

Study of Kinetics of Copper Oxidation by Electrolysis Under Non-Stationary Conditions

Effect of Surfactants on the Reduction of Lead(ii) Ions on Lead Electrode

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