About: Thermal stability of nanocrystalline ε-Fe2O3

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Thermal behavior of highly crystalline ε-Fe2O3 nanoparticles of different apparent crystallite sizes was characterized using thermogravimetry, differential thermal analysis, and analysis of evolved gas by mass spectrometry. Phase composition of the samples was monitored ex situ by X-ray powder diffraction. The results show that the thermal stability of this metastable iron oxide polymorph decreases with increasing particle size. For the particle diameter of 19(2) nm, the transformation temperature was equal to 794(5) °C, while for 28(2) nm only 755(10) °C. Surface of the nanoparticles contained adsorbed water and carbon dioxide. Elimination of these species proceeds in two steps. Water is removed at temperatures below 200 °C and CO2 in the temperature range between 200 and 450 °C. Thermal behavior of highly crystalline ε-Fe2O3 nanoparticles of different apparent crystallite sizes was characterized using thermogravimetry, differential thermal analysis, and analysis of evolved gas by mass spectrometry. Phase composition of the samples was monitored ex situ by X-ray powder diffraction. The results show that the thermal stability of this metastable iron oxide polymorph decreases with increasing particle size. For the particle diameter of 19(2) nm, the transformation temperature was equal to 794(5) °C, while for 28(2) nm only 755(10) °C. Surface of the nanoparticles contained adsorbed water and carbon dioxide. Elimination of these species proceeds in two steps. Water is removed at temperatures below 200 °C and CO2 in the temperature range between 200 and 450 °C. (en)
Title	Thermal stability of nanocrystalline ε-Fe2O3 Thermal stability of nanocrystalline ε-Fe2O3 (en)
skos:prefLabel	Thermal stability of nanocrystalline ε-Fe2O3 Thermal stability of nanocrystalline ε-Fe2O3 (en)
skos:notation	RIV/61388980:_____/14:00429198!RIV15-GA0-61388980
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP204/10/0035)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Večerníková, Eva Pližingrová, Eva Brázda, Petr Lančok, Adriana
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	Ústav anorganické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	50350
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/14:00429198
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ε-Fe2O3; Differential thermal analysis; Evolved gas analysis; Infrared spectroscopy; Thermogravimetry; X-ray powder diffraction (en)
http://linked.open.../riv/klicoveSlovo	Thermogravimetry Infrared spectroscopy Evolved gas analysis X-ray powder diffraction ε-Fe2O3 Differential thermal analysis
http://linked.open...odStatuVydavatele	HU - Maďarsko
http://linked.open...ontrolniKodProRIV	[3B0F9DF7C2CA]
http://linked.open...i/riv/nazevZdroje	Journal of Thermal Analysis and Calorimetry
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Hyperfine Interactions in Nanosized and Low-Dimensional Iron Oxides
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	117
http://linked.open...iv/tvurceVysledku	Nižňanský, D. Lančok, Adriana Brázda, Petr Večerníková, Eva Pližingrová, Eva
http://linked.open...ain/vavai/riv/wos	000338120100010
issn	1388-6150
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s10973-014-3711-9

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