Registration Number
0224U002349,
0122U000762
, R & D reports
Title
Compounds of d- and f-metals with polyoxometalate anions and prediction of interaction in complex oxide systems
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Head
Rozantsev Heorhii M., Доктор хімічних наук
Registration Date
12-02-2024
Organization
Vasyl' Stus Donetsk National University
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Within the framework of the crystal energy theory of isomorphous substitutions, the mixing energies and critical temperatures of decomposition (stability) of solid solutions of lanthanide orthoarsenates with zircon structure and monazite structure, as well as high-temperature superconductors based on ferrum or yttrium and lanthanum oxyarsenides were calculated. Diagrams have been built that allow predicting the thermodynamic stability of solid solutions. The results of the work can be useful when choosing the ratio of components in mixed matrices and the amount of activator in fluorescent, laser, and other practically important materials, as well as in matrices for immobilization of toxic and radioactive waste, for the creation of new high-temperature superconductors.
The scientific problem was solved, which consists in obtaining new thermodynamic characteristics of polycondensation processes in aqueous solutions of W(VI) with low acidity with the formation of ionic associates between paratungstate B anions and cations of d-metals, which made it possible to create procedures for the targeted synthesis of new salts of polyoxometalates and obtain single-crystal samples of double sodium salts and d-metals with paratungstate B anion. It was established that copper(II) salts with paratungstate B anion exhibit high antibacterial activity against E. coli ATCC 25922, new procedures for manufacturing of polyoxometalate-containing antimicrobial coatings based on biodegradable polymer of polylactide acid, which correspond to the principles of "green" chemistry. Such films can be used as biocidal surfaces in crowded areas (bomb shelters, hospitals, etc.) in order to prevent the spread of bacteria and viruses.
Product Description
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Baumer Viacheslav M.
Hetman Yevgen I.
Duvanova Ella S.
Zubov Eduard Ye.
Kordysh Oleksii M.
Mariichak Oleksandra Yu.
Radio Serhii V.
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2024-02-12
