The possibility of synthesis of nanodispersed composites Fe3O4@M(II)-Fe layered double hydroxides (M = Mg, Ni) is shown by mechanical processing a mixture of solid salts M(II) (M = Mg, Ni), Fe(II) and Fe(III) with solid sodium hydroxide, followed by washing the reaction products with water. The formation of magnetite in the composite occurs due to the interaction of salts of ferrous and trivalent iron with sodium hydroxide, in turn, the formation of layered double hydroxides due to the interaction of salts of divalent metals (M = Mg, Ni) and ferric salts with sodium hydroxide. It was exhibited that the prepared nanodispersed composites can be used as sorbents for the deep purification of aqueous solutions from As(III).
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The authors are grateful to S.S. Shatskaya (Institute of Solid State Chemistry and Mechanochemistry, SB RAS) for performing a chemical analysis of aqueous solutions for the content of As(III) in them, as well as to N.V. Bulina (Institute of Solid State Chemistry and Mechanochemistry, SB RAS) for performing X-ray phase measurements.
The authors declare that there is no conflict of interest requiring disclosure in this article.
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Khussnutdinov, V.R., Isupov, V.P. Mild Mechanochemical Synthesis of Nanodispersed Composites Magnetite@M(II)-Fe Layered Double Hydroxides (M = Mg, Ni). Russ J Appl Chem 93, 639–644 (2020). https://doi.org/10.1134/S1070427220050031
- nanodispersed composites
- Mg(II)-Fe (III) layered double hydroxides
- Ni(II)-Fe(III) layered double hydroxides