JAŠEK, Ondřej, Vít KUDRLE, Peter ZELINA, Petr SYNEK, Bohumil DAVID and Naděžda PIZÚROVÁ. SYNTHESIS OF IRON NANOPARTICLES WITH CONTENT OF GAMMA-FE AND FE3C IN MICROWAVE PLASMA DISCHARGES. In Nanocon 2011. 2011. ISBN 978-80-87294-27-7.
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Basic information
Original name SYNTHESIS OF IRON NANOPARTICLES WITH CONTENT OF GAMMA-FE AND FE3C IN MICROWAVE PLASMA DISCHARGES
Authors JAŠEK, Ondřej, Vít KUDRLE, Peter ZELINA, Petr SYNEK, Bohumil DAVID and Naděžda PIZÚROVÁ.
Edition Nanocon 2011, 2011.
Other information
Original language English
Type of outcome Conference abstract
Field of Study 10305 Fluids and plasma physics
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Organization unit Faculty of Science
ISBN 978-80-87294-27-7
Changed by Changed by: prof. Mgr. Vít Kudrle, Ph.D., učo 2560. Changed: 11/7/2015 11:45.
Abstract
Microwave plasma discharges were used to synthesize iron based nanoparticles with content of alpha-, gamma-Fe phases, magnetite Fe3O4 and Fe3C carbide. We used two types of discharges: a) microwave plasma torch operating at atmospheric pressure and b) low pressure (0.5 - 4 kPa) surface wave discharge. Discharges were ignited in argon and nanoparticles were prepared by decomposition of iron pentacarbonyl Fe(CO)5. Pure iron nanoparticles are known to be very unstable on air. To stabilize our samples we investigated an influence of hydrocarbon (methane, acetylene and ethene) or ammonia(NH3) gas admixture on final products. Our samples were analyzed by x-ray powder diffraction (XRD), transmission electron microscopy TEM and Raman spectroscopy. XRD analysis showed presence of gama-Fe phase and carbide Fe3C in our samples. Samples with high content of zero valent iron showed better stability on air.
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