NDLI: The formation mechanism of iron oxide nanoparticles within the microwave-assisted solvothermal synthesis and its correlation with the structural and magnetic properties

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Machovsky, M. Pastorek, M. Kuritka, I. Saha, P. Kozakova, Z. Kazantseva, N. E. Bazant, P. Babayan, V.
Description	Author Affiliation: Kozakova Z ( Centre of Polymer Systems, Tomas Bata University in Zlin, tr. Tomase Bati 5678, 760 01 Zlin, Czech Republic. zkozakova@cps.utb.cz.)
Abstract	Magnetic nanoparticles based on $Fe_{3}O_{4}$ were prepared by a facile and rapid one-pot solvothermal synthesis using $FeCl_{3}·6H_{2}O$ as a source of iron ions, ethylene glycol as a solvent and $NH_{4}Ac,$ $(NH_{4})_{2}CO_{3},$ $NH_{4}HCO_{3}$ or aqueous $NH_{3}$ as precipitating and nucleating agents. In contrast to previous reports we reduce the synthesis time to 30 minutes using a pressurized microwave reactor without the requirement of further post-treatments such as calcination. Dramatically reduced synthesis time prevents particle growth via Ostwald ripening thus the obtained particles have dimensions in the range of 20 to 130 nm, they are uniform in shape and exhibit magnetic properties with saturation magnetization ranging from 8 to 76 emu $g^{−1}.$ The suggested method allows simple particle size and crystallinity tuning resulting in improved magnetic properties by changing the synthesis parameters, i.e. temperature and nucleating agents. Moreover, efficiency of conversion of raw material into the product is almost 100%.
ISSN	14779226
Issue Number	48
Journal	Dalton Trans.
Volume Number	44
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2015-12-28
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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