Issue 10, 2013
From the journal:

New Journal of Chemistry

Studies on colloidal stability of PVP-coated LSMO nanoparticles for magnetic fluid hyperthermia

S. V. Jadhav,a   D. S. Nikam,a   V. M. Khot,a   N. D. Thorat,a   M. R. Phadatare,a   R. S. Ningthoujam,b   A. B. Salunkhec  and  S. H. Pawar*a  

* Corresponding authors

a Center for Interdisciplinary Research, D. Y. Patil University, Kolhapur 416006, MS India
E-mail: pawar_s_h@yahoo.com, swativjphysics@gmail.com
Fax: +91-0231-2601595
Tel: +91-0231-2601202

b Chemistry Division, Bhabha Atomic Research Centre, Mumbai, India

c Department of Applied Physics, University of Santiago de Compostela, Spain

Abstract

La0.7Sr0.3MnO3 (LSMO) nanoparticles with a size of ∼23 nm have been prepared by a combustion method and functionalized with polyvinylpyrrolidone (PVP) for their possible application in magnetic fluid hyperthermia (MFH). Uncoated and PVP-coated samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, high resolution transmission electron microscopy and vibrating sample magnetometer studies. Magnetic measurements of both coated and uncoated particles reveal the superparamagnetic nature at room temperature. Colloidal stability has been measured in terms of zeta potential. The resulting PVP-coated particles form a stable suspension in phosphate buffer saline (PBS) and double distilled water (DDW) and possess a narrow hydrodynamic size distribution. The induction heating studies of these nanoparticles at different alternating magnetic fields (167.6, 251.4 and 335.2 Oe) were carried out by dispersing nanoparticles in DDW and PBS. These PVP-coated LSMO NPs exhibit a higher specific absorption rate in PBS than in DDW. The results suggest that combustion-synthesized LSMO nanoparticles coated with PVP can be used as potential heating agents in MFH.

Graphical abstract: Studies on colloidal stability of PVP-coated LSMO nanoparticles for magnetic fluid hyperthermia

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Article information

DOI
https://doi.org/10.1039/C3NJ00554B
Article type
Paper
Submitted
23 May 2013
Accepted
17 Jul 2013
First published
08 Aug 2013

New J. Chem., 2013,37, 3121-3130

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Studies on colloidal stability of PVP-coated LSMO nanoparticles for magnetic fluid hyperthermia

S. V. Jadhav, D. S. Nikam, V. M. Khot, N. D. Thorat, M. R. Phadatare, R. S. Ningthoujam, A. B. Salunkhe and S. H. Pawar, New J. Chem., 2013, 37, 3121 DOI: 10.1039/C3NJ00554B

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