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Avrami behavior of magnetite nanoparticles formation in co-precipitation process

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Author(s): Ahmadi R. | Hosseini Madaah H.R. | Masoudi A.

Journal: Journal of Mining and Metallurgy, Section B : Metallurgy
ISSN 1450-5339

Volume: 47;
Issue: 2;
Start page: 211;
Date: 2011;
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Keywords: Avrami | Magnetite | Nanoparticles | Co-precipitation

ABSTRACT
In this work, magnetite nanoparticles (mean particle size about 20 nm) were synthesized via coprecipitation method. In order to investigate the kinetics of nanoparticle formation, variation in the amount of reactants within the process was measured using pH-meter and atomic absorption spectroscopy (AAS) instruments. Results show that nanoparticle formation behavior can be described by Avrami equations. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) were performed to study the chemical and morphological characterization of nanoparticles. Some simplifying assumptions were employed for estimating the nucleation and growth rate of magnetite nanoparticles.
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Tango Jona
Tangokurs Rapperswil-Jona