Abstract
A procedure has been proposed for the synthesis of a nanocomposite based on barium titanate modified by adding nanodispersed magnetite using the sol–gel method in an acetic acid medium followed by annealing at 800°C. The physicochemical analysis of the products has shown that the matrix phase after annealing is barium titanate with an admixture of barium carbonate, and, in addition to magnetite, there are minor inclusions of hematite and wustite. The elemental composition of nanosized samples has been determined using energy-dispersive X-ray spectroscopy. It has been demonstrated that the concentration of introduced Fe3O4 affects the morphological and phase composition of the composites. The specific surface area and type of porosity of calcined samples have been determined by the low-temperature nitrogen adsorption/desorption method. The effect of BaTiO3, BaTiO3/Fe3O4-1%, and BaTiO3/Fe3O4-10% powders on the adsorption capacity and photocatalytic activity in the process of decolorization of the dye rhodamine B from an aqueous solution in the dark and under the action of ultraviolet light has been studied. The kinetics of adsorption in the dark and photocatalytic decomposition of rhodamine B under the action of ultraviolet radiation in an aqueous suspension of the obtained composites have been analyzed using pseudo-first and pseudo-second order kinetic models.
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ACKNOWLEDGMENTS
We are grateful to the Shared Facility Center “Upper Volga Regional Center for Physical and Chemical Research.”
Funding
The work was supported by the Ministry of Science and Higher Education of the Russian Federation (State assignment no. 122040500044-4.)
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Translated by G. Kirakosyan
Supplementary Information
X-ray diffraction analysis of the synthesized Fe3O4 powder.
IR spectrum of the synthesized Fe3O4 powder.
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Ivanov, K.V., Plotvina, A.V. & Agafonov, A.V. Influence of Fe3O4 on Physicochemical and Photocatalytic Properties of Nanosized Barium Titanate. Russ. J. Inorg. Chem. 68, 104–114 (2023). https://doi.org/10.1134/S0036023622601957
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DOI: https://doi.org/10.1134/S0036023622601957