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Magnetite–Activated Carbon Nanocomposites: Synthesis, Sorption Properties, and Bioavailability

  • Composite Materials
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Abstract

Two approaches were considered in searching for an efficient procedure for preparing magnetic nanocomposites based on activated carbon and magnetite nanoparticles by chemical precipitation: preliminary synthesis of magnetite nanoparticles by chemical precipitation from solutions of bi- and trivalent iron salts, followed by introduction of the nanoparticles into the activated carbon matrix, and synthesis of magnetite nanoparticles in the activated carbon matrix. A comparative analysis of the content of magnetite nanoparticles and functional characteristics (textural parameters, sorption capacity, saturation magnetization, and coercive force of the nanocomposites) was made. The ex situ synthesis proved to be the best procedure for preparing nanocomposite sorbents based on activated carbon and magnetite nanoparticles by chemical precipitation, as judged from the yield and functional characteristics of the target product. In biological testing, the maximal harmless (inactive) concentration of the magnetic nanocomposite in the test system with microalgae appeared to be higher by an order of magnitude than that in the test system with ciliates.

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Funding

The study was supported by the Russian Foundation for Basic Research (project no. 19-33-90149). The magnetic properties of the samples were studied by G.I. Dzhardimalieva within the theme of the government assignment (state registry no. 0089-2029-0012).

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Authors and Affiliations

  1. Moscow Aviation Institute (National Research University), 125993, Moscow, Russia

    L. S. Bondarenko, I. S. Magomedov, G. I. Dzhardimalieva & K. A. Kydralieva

  2. Severtsov Institute of Problems of Ecology and Evolution, Russian Academy of Sciences, 119071, Moscow, Russia

    V. A. Terekhova & P. V. Uchanov

  3. Moscow State University, 119991, Moscow, Russia

    V. A. Terekhova & E. Yu. Milanovskii

  4. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Moscow oblast, Russia

    G. I. Dzhardimalieva

  5. Institute of Physicochemical and Biological Problems of Soil Science, Pushchino, 142290, Moscow oblast, Russia

    G. K. Vasil’eva

Authors
  1. L. S. Bondarenko
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  2. I. S. Magomedov
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  3. V. A. Terekhova
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  4. G. I. Dzhardimalieva
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  5. P. V. Uchanov
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  6. E. Yu. Milanovskii
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  7. G. K. Vasil’eva
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  8. K. A. Kydralieva
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Corresponding author

Correspondence to K. A. Kydralieva.

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Bondarenko, L.S., Magomedov, I.S., Terekhova, V.A. et al. Magnetite–Activated Carbon Nanocomposites: Synthesis, Sorption Properties, and Bioavailability. Russ J Appl Chem 93, 1202–1210 (2020). https://doi.org/10.1134/S1070427220080133

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  • DOI: https://doi.org/10.1134/S1070427220080133

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