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One pot, scalable synthesis of hydroxide derived ferrite magnetic nanoparticles
Journal article   Open access   Peer reviewed

One pot, scalable synthesis of hydroxide derived ferrite magnetic nanoparticles

Kaustubh Sudhakar, Takayuki Kono, Tarek El-Melegy, Hussein Badr, Prajwal M. Laxmeesha, Kiana Montazeri, Anna Semisalova, Michael Farle, Ulf Wiedwald and Michel W. Barsoum
Journal of magnetism and magnetic materials, v 582
Sep 2023
url
https://doi.org/10.1016/j.jmmm.2023.170986View
Accepted (AM)Open Access (Publisher-Specific) Open

Abstract

Herein we describe a new, quite simple, highly scalable, one-pot protocol for the synthesis of ferrite nanoparticles, NPs. We immerse water insoluble iron boride, FeB, powders – in plastic bottles at temperatures between 50 °C and 80 °C and ambient pressures – for tens of hours in high pH aqueous solutions of potassium-, sodium-, tetramethylammonium-, or tetrabutylammonium-hydroxides. The resulting powder is comprised of iron oxide, Fe3O4, NPs with, in one case, a saturation magnetization of 75 Am2kg−1, that exhibit ferrimagnetic behavior, with a critical temperature of 820 K. The same protocol was used to convert water soluble iron sulphate, FeSO4, to the same NPs. The average size of the NPs depends on reaction time; after 24 h, they are in the 15 nm range; after 48 h, they are closer to 25 nm. While our approach may appear to be similar to the co-precipitation method for making such NPs, we make a strong case that our approach is significantly simpler, nonetheless reaching high magnetization of NPs.

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Collaboration types
Industry collaboration
Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Multidisciplinary
Physics, Condensed Matter
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