Plasmachemical synthesis of maghemite nanoparticles in atmospheric pressure microwave torch

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Authors

SYNEK Petr JAŠEK Ondřej ZAJÍČKOVÁ Lenka DAVID Bohumil KUDRLE Vít PIZÚROVÁ Naděžda

Year of publication 2011
Type Article in Periodical
Magazine / Source Materials Letters
MU Faculty or unit

Faculty of Science

Citation
Web http://dx.doi.org/10.1016/j.matlet.2010.12.048
Doi http://dx.doi.org/10.1016/j.matlet.2010.12.048
Field Plasma physics
Keywords Iron oxide; PECVD; Nanoparticles; Magnetic materials; Raman; Maghemite
Description The powder of gama - Fe2O3 nanoparticles was synthesized in microwave torch at atmospheric pressure from 0.05 sccm of Fe(CO)5 vapors in 670 sccm of argon. The optimization of the torch reactor design and deposition conditions allowed continual synthesis of gama - Fe2O3 nanoparticles at low power consumption. The synthesized powder was collected at the reactor walls and analyzed by TEM, X-ray diffraction and Raman spectroscopy without any further purification or treatment. The mean diameter of NPs, as observed by TEM, was 12 nm with a 90% confidence interval 5.5-22 nm.
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