Synthesis and investigation of sorption properties of Ca3La6(SiO4)6 biocomposite for targeted delivery of 5-fluorouracil

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The paper presents the synthesis of dispersed Ca3La6(SiO4)6 biocomposite material by processing calcium silicate sol with the addition of 0.1, 0.3 and 0.7 mol La3+ under hydrothermal conditions. The composition, morphology and structure of the biocomposite were studied by XRF, SEM, and EMF methods, and the reaction products CaSiO3, CaLa4(SiO4) were determined 3O and Ca3La6(SiO4)6 depending on the concentration of La3+ The structural characteristics of biocomposite powders with different La3+ contents have been studied by BET and DFT methods. Their sorption characteristics with respect to 5-fluorouracil were studied depending on the pH of the medium, the maximum sorption capacity is 0.768 mg/g at pH 3 for a sample of Ca3La6(SiO4)6 biocomposite with the addition of 0.3 mol La3+. Additionally, the biocompatible properties of biocomposite samples under conditions of their contact with artificial blood plasma were evaluated by establishing key changes in their composition, morphology and structure during the formation of the bioactive phase of apatite on the accessible surface of the samples. The results hold promise for further research in the development of new sorption materials, including biomaterials for targeted drug delivery, with the potential for practical application.

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Sobre autores

O. Shichalin

Far Eastern Federal University

Autor responsável pela correspondência
Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

O. Kapustina

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

Z. Kornakova

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

S. Gribanova

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

V. Mayorov

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

A. Fedorets

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

A. Lembikov

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

V. Vasilyeva

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

I. Buravlev

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

V. Apanasevich

Pacific State Medical University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

E. Papynov

Far Eastern Federal University

Email: oleg_shich@mail.ru
Rússia, Vladivostok, 690922

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2. 1. Diffractograms of biocomposite samples doped with La3+ ions with concentrations of 0.1, 0.3 and 0.7 mol.

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3. Fig. 2. SEM images (a–b*) and EMF spectra (a**–b**) of biocomposite samples doped with La3+ ions with concentrations of 0.1, 0.3 and 0.7 mol.

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4. 3. Isotherms of low–temperature (77 K) nitrogen adsorption and desorption and pore size distribution according to the DFT model for samples of biocomposite doped with La3+ ions with concentrations of 0.1, 0.3 and 0.7 mol.

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5. 4. Light absorption spectra of calibration solutions and solution in the presence of synthesized biocomposite doped with La3+ ions with concentrations of 0.1, 0.3 and 0.7 mol.

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6. 5. The scheme of ionization of the 5-fluorouracil molecule.

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7. Fig. 6. SEM images (a–b) and EMF analysis (a*–b*) of the surface of biocomposite samples doped with La3+ ions with concentrations of 0.1, 0.3 and 0.7 mol.

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8. 7. Diffractograms of biocomposite samples doped with La3+ ions with concentrations of 0.1, 0.3, and 0.7 mol after contact with IPC solution.

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9. 8. Isotherms of low–temperature (77 K) nitrogen adsorption and desorption and pore size distribution according to the DFT model for samples of biocomposite doped with La3+ ions with concentrations of 0.1, 0.3, and 0.7 mol after their contact with a solution of IPC.

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