Crown Ether–SiO2–TiO2 Composites in the Sorption of Metal Ions from Acidic Aqueous Solutions
- Authors: Fedorova O.V.1,2, Maksimovskikh A.I.2, Koryakova O.V.1, Rusinov G.L.1,2, Murashkevich A.N.3, Rychkov V.N.4, Charushin V.N.1,2
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Affiliations:
- Postovskii Institute of Organic Synthesis, Ural Branch
- Chemical Technological Institute
- Belarus State Technological University
- Physical Technological Institute
- Issue: Vol 88, No 2 (2018)
- Pages: 362-367
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/222032
- DOI: https://doi.org/10.1134/S1070363218020299
- ID: 222032
Cite item
Abstract
Crown ether–SiO2–TiO2 composites were obtained by adding crown ethers (dibenzo-18-crown-6 or dibenzo-21-crown-7) during the sol–gel synthesis of SiO2–TiO2. The behavior of the composites in the sorption of several alkali, alkaline-earth, and rare-earth metal cations from acidic solutions was investigated. The crown ether–SiO2–TiO2 composites of the crown ethers showed higher efficiency and selectivity in the sorption of barium cations, as well as ytterbium cations in the presence of Sr(II), Ce(III), La(III), and Nd(III) compared to the parent crown ethers. It was established by FTIR spectroscopy that the crown ether molecule immobilized on the oxide surface has a distorted structure, which can explain the change in the selectivity of complex formation in going from crown ethers to their composites.
About the authors
O. V. Fedorova
Postovskii Institute of Organic Synthesis, Ural Branch; Chemical Technological Institute
Author for correspondence.
Email: fedorova@ios.uran.ru
Russian Federation, Yekaterinburg, 620990; ul. Mira 28, Yekaterinburg, 620002
A. I. Maksimovskikh
Chemical Technological Institute
Email: fedorova@ios.uran.ru
Russian Federation, ul. Mira 28, Yekaterinburg, 620002
O. V. Koryakova
Postovskii Institute of Organic Synthesis, Ural Branch
Email: fedorova@ios.uran.ru
Russian Federation, Yekaterinburg, 620990
G. L. Rusinov
Postovskii Institute of Organic Synthesis, Ural Branch; Chemical Technological Institute
Email: fedorova@ios.uran.ru
Russian Federation, Yekaterinburg, 620990; ul. Mira 28, Yekaterinburg, 620002
A. N. Murashkevich
Belarus State Technological University
Email: fedorova@ios.uran.ru
Belarus, Minsk, 220006
V. N. Rychkov
Physical Technological Institute
Email: fedorova@ios.uran.ru
Russian Federation, ul. Mira 21, Yekaterinburg, 620002
V. N. Charushin
Postovskii Institute of Organic Synthesis, Ural Branch; Chemical Technological Institute
Email: fedorova@ios.uran.ru
Russian Federation, Yekaterinburg, 620990; ul. Mira 28, Yekaterinburg, 620002