Synthesis and Study of Si–Ti Mixed Oxides Modified with Dibenzo-18-Crown-6 Complexes with Metal Cations

Composites based on SiO 2 –TiO 2 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 dime...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2022-10, Vol.67 (10), p.1527-1536
Main Authors: Fedorova, O. V., Murashkevich, A. N., Filatova, E. S., Koryakova, O. V., Valova, M. S., Kravchenko, A. O., Maksimovskikh, A. I., Rusinov, G. L.
Format: Article
Language:English
Subjects:
Barium
Cations
Cesium
Chemistry
Chemistry and Materials Science
Composite materials
Crown ethers
Dimethylformamide
Inorganic Chemistry
Metal ions
Mixed oxides
Rare earth elements
Silicon dioxide
Sodium
Sol-gel processes
Sorbents
Synthesis and Properties of Inorganic Compounds
Thermogravimetric analysis
Titanium
Titanium dioxide
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Summary:Composites based on SiO 2 –TiO 2 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/SiO 2 –TiO 2 composite was demonstrated; such sorbents could be used in practice.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023622100345