SYNTHESIS OF IRON NANOPARTICLES WITH CONTENT OF GAMMA-FE AND FE3C IN MICROWAVE PLASMA DISCHARGES

JAŠEK, Ondřej, Vít KUDRLE, Peter ZELINA, Petr SYNEK, Bohumil DAVID a 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.

Základní údaje

Originální název

SYNTHESIS OF IRON NANOPARTICLES WITH CONTENT OF GAMMA-FE AND FE3C IN MICROWAVE PLASMA DISCHARGES

Autoři

JAŠEK, Ondřej, Vít KUDRLE, Peter ZELINA, Petr SYNEK, Bohumil DAVID a Naděžda PIZÚROVÁ

Vydání

Nanocon 2011, 2011

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Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10305 Fluids and plasma physics

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-80-87294-27-7

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Anotace

V originále

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.