Y. D. Mitskevich, M. M. Degtyarik, A. A. Kharchanka, M. V. Bushinsky, Yu. A. Fedotova, E. S. Voropay
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引用次数: 0
Abstract
Magnetic nanocomposite particles of Fe3O4/α-FeOOH were synthesized by alkaline coprecipitation from aqueous solutions of di- and trivalent iron salts. The phase composition and magnetic characteristics of the nanocomposite particles as compared to nanoparticles of single-phase Fe3O4 were studied using x-ray structural analysis, Mössbauer spectroscopy, and vibration magnetometry. The sizes of the obtained particles (average diameters of 4-21 nm) and the Debye temperatures ΘD = 273 ± 19 and 327 ± 45 K for Fe3O4 and Fe3O4/FeOOH, respectively, were determined by various methods. The obtained magnetic characteristics of Fe3O4/FeOOH (Ms ≈ 32 emu/g at T = 300 K) allowed this composite material to be used as a reagent in improved oxidation processes followed by magnetic decantation.
期刊介绍：
Journal of Applied Spectroscopy reports on many key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers focus on the theory of lasers, as well as the tremendous potential for the practical applications of lasers in numerous fields and industries.
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