Study of structural features and phase transformations in nanocomposites of Fe2O3@NdFeO3 type
Kozlovskiy A.L. Egizbek K. Zdorovets M.V. Abdinov R.S. Kadyrzhanov K.K.
August 2021Springer
Journal of Materials Science: Materials in Electronics
2021#32Issue 1621237 - 21247 pp.
The aim of this work is to study the effect of the Nd2O3 dopant concentration on the phase composition, structural, and magnetic parameters of Fe2O3@NdFeO3-type nanocomposites, which have great prospects for use as a catalyst base for the purification of aqueous media from heavy metals. Using X-ray phase analysis, it was found that an increase in dopant concentration leads to the formation of a stable NdFeO3 phase, which dominates in the structure at concentrations of 0.4–0.5 mol. Changes in the structural parameters, as well as the density of nanocomposites, are associated with structural orderings arising as a result of phase transformations and NdFeO3 phase dominance in the structure. Using Mössbauer spectroscopy, it was found that values of the hyperfine magnetic parameters are characteristic of the hematite structure, while, according to the data obtained, the presence of paramagnetic inclusions was not observed. Evaluation results of the manganese purification efficiency of aqueous media showed that an increase in particle concentration from 0.001 to 0.005 g leads to an increase in absorption efficiency to 45–75%, which indicates a positive effect of absorption and degree of purification.
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Kh. Dosmukhamedov Atyray University, Atyrau, Kazakhstan
L.N.Gumilyov Eurasian National University, Nur-Sultan, Kazakhstan
The Institute of Nuclear Physics, Almaty, Kazakhstan
Ural Federal University, Ekaterinburg, Russian Federation
Kh. Dosmukhamedov Atyray University
L.N.Gumilyov Eurasian National University
The Institute of Nuclear Physics
Ural Federal University
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