Coupling Effect of Microwave and Mechanical Forces during the Synthesis of Ferrite Nanoparticles by Microwave-Assisted Ball Milling

A microwave-assisted ball milling process was used for low temperature synthesis of MgFe2O4 nanoparticles with high saturation magnetization. Four comparitive experiments, including boiling water assisted ball milling, microwave irradiation, regular ball milling, and microwave/ball milling alternati...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2013-10, Vol.52 (39), p.14179-14184
Main Authors: Chen, Ding, Zhang, Yingzhe, Chen, Biyu, Kang, Zhitao
Format: Article
Language:English
Subjects:
Ball milling
Irradiation
Joining
Microwaves
Nanoparticles
Radicals
Saturation (magnetic)
Synthesis
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Summary:A microwave-assisted ball milling process was used for low temperature synthesis of MgFe2O4 nanoparticles with high saturation magnetization. Four comparitive experiments, including boiling water assisted ball milling, microwave irradiation, regular ball milling, and microwave/ball milling alternative treatment, were also conducted to investigate the coupling effect of microwave and mechanical forces in the microwave-assisted ball milling process, which played a key role in the successful synthesis of MgFe2O4 nanoparticles. The concentrations of •OH radicals in the reaction solutions of these experiments were measured and used as an indicator for the solution reactivity. It showed that the concentration of •OH in microwave-assisted ball milling was much higher than that in microwave irradiation and regular stirring ball milling processes, confirming that the coupling of microwave and ball milling significantly enhanced the chemical reaction.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie401890j