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Issue 4, 2013
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Induction heating studies of dextran coated MgFe2O4 nanoparticles for magnetic hyperthermia

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Abstract

MgFe2O4 nanoparticles with sizes around 20 nm have been prepared by a combustion method and functionalized with dextran for their possible applications in magnetic particle hyperthermia. The induction heating study of these nanoparticles at different magnetic field amplitudes, from 6.7 kA m−1 to 26.7 kA m−1, showed self-heating temperature rise up to 50.25 °C and 73.32 °C (at 5 mg mL−1 and 10 mg mL−1 concentrations in water respectively) which was primarily thought to be due to hysteresis losses activated by an AC magnetic field. The dextran coated nanoparticles showed a maximum specific absorption rate (SAR) of about 85.57 W g−1 at 26.7 kA m−1 (265 kHz). Dextran coated nanoparticles at concentrations below 1.8 mg mL−1 exhibit good viability above 86% on mice fibroblast L929 cells. The results suggest that combustion synthesized MgFe2O4 nanoparticles coated with dextran can be used as potential heating agents in magnetic particle hyperthermia. Uncoated and dextran coated samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric-differential thermal analysis (TG-DTA) and zeta potential-DLS studies.

Graphical abstract: Induction heating studies of dextran coated MgFe2O4 nanoparticles for magnetic hyperthermia

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Publication details

The article was received on 19 Jan 2012, accepted on 18 Oct 2012 and first published on 22 Oct 2012


Article type: Paper
DOI: 10.1039/C2DT31114C
Citation: Dalton Trans., 2013,42, 1249-1258
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    Induction heating studies of dextran coated MgFe2O4 nanoparticles for magnetic hyperthermia

    V. M. Khot, A. B. Salunkhe, N. D. Thorat, R. S. Ningthoujam and S. H. Pawar, Dalton Trans., 2013, 42, 1249
    DOI: 10.1039/C2DT31114C

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