Abstract
Composites based on SiO2–TiO2 and dibenzo-18-crown-6 (DBC) complexes with rare earth element (REE), sodium, cesium, barium, and strontium cations, including ion-imprinted composites, were prepared by sol–gel process. According to thermogravimetric analysis data, the greater part of water and dimethylformamide in the composites with DBC complexes were bound into a complex with the crown ether and the metal cation, which decomposed at 210–230°C. The possibility of fabricating efficient and selective sorbents for REEs by imprinting REE cations or cheap Na(I) cation, which has a similar size, into the DBC/SiO2–TiO2 composite was demonstrated; such sorbents could be used in practice.
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This study was performed within the framework of the state assignments AAAA-A19-119012290117-6 and AAAA-A19-119012490007-8 using equipment of the center for collective use “Spectroscopy and Analysis of Organic Compounds ” (CCU “SAOC”).
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Fedorova, O.V., Murashkevich, A.N., Filatova, E.S. et al. Synthesis and Study of Si–Ti Mixed Oxides Modified with Dibenzo-18-Crown-6 Complexes with Metal Cations. Russ. J. Inorg. Chem. 67, 1527–1536 (2022). https://doi.org/10.1134/S0036023622100345
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DOI: https://doi.org/10.1134/S0036023622100345