Abstract
A new sorption material, silica gel with covalently immobilized formazan group, was suggested and characterized. The material was prepared by coupling the immobilized aryldiazonium salt with benzaldehyde phenylhydrazone. The equilibrium and kinetic characteristics of the sorption of Cu(II), Co(II), Ni(II), and Cd(II) from solutions onto the modified silica gel were determined. The material proved to efficiently concentrate Cu(II) from multicomponent solutions. The coordination surrounding of Cu(II) in the complex on the sorbent surface was determined by ESR.
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Original Russian Text © Dzh.N. Konshina, A.V. Danilova, Z.A. Temerdashev, S.N. Bolotin, A.A. Gurinov, V.V. Konshin, 2016, published in Zhurnal Prikladnoi Khimii, 2016, Vol. 89, No. 4, pp. 476−483.
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Konshina, D.N., Danilova, A.V., Temerdashev, Z.A. et al. Preparation and properties of silica gel with immobilized formazan group. Russ J Appl Chem 89, 590–597 (2016). https://doi.org/10.1134/S107042721604011X
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DOI: https://doi.org/10.1134/S107042721604011X