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Adsorption of Organic Dyes by Fe3O4@C, Fe3O4@C@C, and Fe3O4@SiO2 Magnetic Nanoparticles

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Fe3O4@C, Fe3O4@C@C, and Fe3O4@SiO2 core–shell nanoparticles are synthesized via thermal decomposition and coprecipitation. Samples are characterized via X-ray spectroscopy, transmission electron microscopy, and magnetometry. It is shown that the magnetic core of all nanoparticles is nanocrystalline and has crystal parameters corresponding to only one phase of Fe3O4, covered with a uniform shell of amorphous carbon or silicon oxide around 8 nm thick. Special attention is given to adsorption properties of the nanoparticles with respect to four dyes: Methylene blue, Congo Red, Eosin Y, and Rhodamine C. The high selectivity of Fe3O4@C nanoparticles to various dyes is revealed.

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ACKNOWLEDGMENTS

Magnetic investigations were carried out in the Center for Collective Use of the Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences.

Funding

This research was funded partly by the Ministry of Science and Higher Education of the Russian Federation, project FWES-2021-0035. Ch. R. Lin and Yu. Zh. Chen thank the National Science and Technology Council of Taiwan for the financial support, MOST no. 110-2112-M-153-005- and no. 108-2923-M-153-001-MY3.

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Correspondence to O. S. Ivanova.

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The authors declare that they have no conflicts of interest.

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Translated by Z. Smirnova

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Ivanova, O.S., Edelman, I.S., Sokolov, A.E. et al. Adsorption of Organic Dyes by Fe3O4@C, Fe3O4@C@C, and Fe3O4@SiO2 Magnetic Nanoparticles. Bull. Russ. Acad. Sci. Phys. 87, 338–342 (2023). https://doi.org/10.3103/S1062873822701192

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  • DOI: https://doi.org/10.3103/S1062873822701192

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