V. V. Spiridonov, M. I. Afanasov, L. A. Makarova, A. V. Sybachin, A. A. Yaroslavov, “A facile approach to prepare water-soluble magnetic metal (oxide) frameworks based on Na,Ca alginate and maghemite”, Mendeleev Commun., 2021, Volume 31, Issue 3,Pages <nobr>412

This article is cited in 9 papers

Communications

A facile approach to prepare water-soluble magnetic metal (oxide) frameworks based on Na,Ca alginate and maghemite

V. V. Spiridonov^a, M. I. Afanasov^a, L. A. Makarova^b, A. V. Sybachin^a, A. A. Yaroslavov^a

^a Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
^b Department of Physics, M.V. Lomonosov Moscow State University, Moscow, Russian Federation

Abstract: A one-step ultrasonication technique for the preparation of magnetic metal (oxide) organic frameworks (MOFs) with a size of >135nm based on sodium alginate crosslinked with Ca²⁺ ions and maghemite (γ-Fe₂O₃) nanoparticles with sizes from 7 to 20nm was proposed. The MOFs were characterized by Mössbauer spectroscopy, TEM, magnetometry, and UV-VIS and IR spectroscopy. The grid (crosslinks) preliminarily formed by Ca²⁺ ions plays an important role in the stabilization of maghemite nanoparticles, and the resulting MOFs can be used as magnetic carriers in systems for hyperthermia and drug delivery.

Keywords: alginate, maghemite, ultrasonic dispersion, nanoparticles, metal (oxide) frameworks, magnetic liquid.

Language: English

DOI: 10.1016/j.mencom.2021.04.043