Eco-Friendly Electroless Template Synthesis of Cu-Based Composite Track-Etched Membranes for Sorption Removal of Lead(II) Ions
Altynbaeva L.S. Mashentseva A.A. Aimanova N.A. Zheltov D.A. Shlimas D.I. Nurpeisova D.T. Barsbay M. Abuova F.U. Zdorovets M.V.
May 2023MDPI
Membranes
2023#13Issue 5
This paper reports the synthesis of composite track-etched membranes (TeMs) modified with electrolessly deposited copper microtubules using copper deposition baths based on environmentally friendly and non-toxic reducing agents (ascorbic acid (Asc), glyoxylic acid (Gly), and dimethylamine borane (DMAB)), and comparative testing of their lead(II) ion removal capacity via batch adsorption experiments. The structure and composition of the composites were investigated by X-ray diffraction technique and scanning electron and atomic force microscopies. The optimal conditions for copper electroless plating were determined. The adsorption kinetics followed a pseudo-second-order kinetic model, which indicates that adsorption is controlled by the chemisorption process. A comparative study was conducted on the applicability of the Langmuir, Freundlich, and Dubinin–Radushkevich adsorption models to define the equilibrium isotherms and the isotherm constants for the prepared composite TeMs. Based on the regression coefficients R2, it has been shown that the Freundlich model better describes the experimental data of the composite TeMs on the adsorption of lead(II) ions.
copper microtubules , electroless deposition , lead(II) ions removal , sorption capacity , template synthesis , track-etched membranes
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The Institute of Nuclear Physics of the Republic of Kazakhstan, Almaty, 050032, Kazakhstan
Department of Chemistry, L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Department of Nuclear Physics, New Materials and Technologies, L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Department of Chemistry, Hacettepe University, Ankara, 06800, Turkey
Department of Intelligent Information Technologies, The Ural Federal University, Yekaterinburg, 620002, Russian Federation
Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
The Institute of Nuclear Physics of the Republic of Kazakhstan
Department of Chemistry
Department of Nuclear Physics
Department of Chemistry
Department of Intelligent Information Technologies
Engineering Profile Laboratory
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