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Development of Magnetic Nanocomposites Based on Beta Zeolites and Study of Their Sorption Properties

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Abstract

Core–shell type magnetic nanocomposites based on Beta zeolites and magnetite (Fe3O4) nanoparticles have been synthesized under hydrothermal conditions. It has been revealed that the magnetic nanocomposites obtained have a high sorption capacity for the organic dye methylene blue. It has been found that the maximum absorption of methylene blue on a Beta–Fe3O4 sample is 186 mg/g, with the adsorption equilibrium being reached within 90 min. The mechanisms and characteristic parameters of the adsorption process have been analyzed using the Langmuir and Freundlich isotherm models. Sorption kinetic curves have been evaluated using the diffusion model and the pseudo-first and pseudo-second order models. The results indicate that the adsorption process has a chemisorption nature, since it obeys the pseudo-second-order rate law.

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Authors and Affiliations

  1. Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences, 199034, St. Petersburg, Russia

    E. Yu. Brazovskaya & O. Yu. Golubeva

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  1. E. Yu. Brazovskaya
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  2. O. Yu. Golubeva
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Correspondence to E. Yu. Brazovskaya.

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Translated by S. Zatonsky

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Brazovskaya, E.Y., Golubeva, O.Y. Development of Magnetic Nanocomposites Based on Beta Zeolites and Study of Their Sorption Properties. Pet. Chem. 60, 957–963 (2020). https://doi.org/10.1134/S0965544120080046

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  • DOI: https://doi.org/10.1134/S0965544120080046

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