About: Study of Microwave Torch Plasmachemical Synthesis of Iron Oxide Nanoparticles Focused on the Analysis of Phase Composition

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	This work presents the results obtained on the single-step route towards the synthesis of iron oxide nanoparticles in a microwave plasma torch. The torch is supplied by 660 sccm of Ar mixed with 1 sccm of Fe(CO)(5) and a variable amount of O-2. The influence of oxygen addition on the phase composition of the synthesized powder was studied. Magnetite and maghemite phases could not be distinguished using the standard X-ray diffraction (XRD) analysis. Therefore, a combined XRD and Raman spectra analysis had to be applied, which is based on fitting of selected diffraction peaks and spectral features. According to XRD and Raman spectroscopy, the powder synthesized from Ar/Fe(CO)(5) consisted about 50 % of magnetite, Fe3O4, the rest being alpha-Fe and FeO. An increase in oxygen flow rate led to an increase in gamma-Fe2O3 percentage, at the expense of alpha-Fe, FeO and Fe3O4. Almost pure gamma-Fe2O3 was synthesized at oxygen flow rates 25-75x higher than the flow rate of Fe(CO)(5). This work presents the results obtained on the single-step route towards the synthesis of iron oxide nanoparticles in a microwave plasma torch. The torch is supplied by 660 sccm of Ar mixed with 1 sccm of Fe(CO)(5) and a variable amount of O-2. The influence of oxygen addition on the phase composition of the synthesized powder was studied. Magnetite and maghemite phases could not be distinguished using the standard X-ray diffraction (XRD) analysis. Therefore, a combined XRD and Raman spectra analysis had to be applied, which is based on fitting of selected diffraction peaks and spectral features. According to XRD and Raman spectroscopy, the powder synthesized from Ar/Fe(CO)(5) consisted about 50 % of magnetite, Fe3O4, the rest being alpha-Fe and FeO. An increase in oxygen flow rate led to an increase in gamma-Fe2O3 percentage, at the expense of alpha-Fe, FeO and Fe3O4. Almost pure gamma-Fe2O3 was synthesized at oxygen flow rates 25-75x higher than the flow rate of Fe(CO)(5). (en)
Title	Study of Microwave Torch Plasmachemical Synthesis of Iron Oxide Nanoparticles Focused on the Analysis of Phase Composition Study of Microwave Torch Plasmachemical Synthesis of Iron Oxide Nanoparticles Focused on the Analysis of Phase Composition (en)
skos:prefLabel	Study of Microwave Torch Plasmachemical Synthesis of Iron Oxide Nanoparticles Focused on the Analysis of Phase Composition Study of Microwave Torch Plasmachemical Synthesis of Iron Oxide Nanoparticles Focused on the Analysis of Phase Composition (en)
skos:notation	RIV/00216224:14740/14:00073661!RIV15-MSM-14740___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0068), P(EE2.3.30.0009), P(GAP205/10/1374)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Jašek, Ondřej Zajíčková, Lenka Synek, Petr
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Středoevropský technologický institut
http://linked.open...dnocenehoVysledku	48302
http://linked.open...ai/riv/idVysledku	RIV/00216224:14740/14:00073661
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Iron oxides; Nanoparticles; Plasmachemical synthesis; Raman spectroscopy; X-ray powder diffraction; Microwave plasma (en)
http://linked.open.../riv/klicoveSlovo	Iron oxides Nanoparticles Raman spectroscopy Plasmachemical synthesis X-ray powder diffraction Microwave plasma
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[489ED3CF2F8E]
http://linked.open...i/riv/nazevZdroje	Plasma Chemistry and Plasma Processing
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Central european institute of technology Employment of Newly Graduated Doctors of Science for Scientific Excellence Plasmachemical processes for synthesis of carbon nanotubes and study of their functional properties
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Jašek, Ondřej Zajíčková, Lenka Synek, Petr
http://linked.open...ain/vavai/riv/wos	000331001000007
issn	0272-4324
number of pages	15 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s11090-014-9520-x
http://localhost/t...ganizacniJednotka	14740

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