About: Bentonite/Iron Oxide Composites: Preparation and Characterization by Hyperfine Methods

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1155/2013/179794
Description	Bentonite/iron oxide system is prepared by isothermal calcination of powder composed of bentonite clay and precursor containing ferric acetate. This preparation technique enables one to get the composite material directly, that is, iron oxide particles embedded in a bentonite matrix. Calcination temperature T-calc is varied from 320 degrees C to 700 degrees C. The resulting series of samples is characterized by local methods based on hyperfine interactions: Fe-57 nuclear magnetic resonance (NMR) and the Mossbauer spectroscopy. The results show that the phase composition changes significantly in dependence on calcination temperature. The amount of maghemite phase rapidly increases up to T-calc = 420 degrees C and decreases abruptly for T-calc higher than 460 degrees C. Bentonite/iron oxide system is prepared by isothermal calcination of powder composed of bentonite clay and precursor containing ferric acetate. This preparation technique enables one to get the composite material directly, that is, iron oxide particles embedded in a bentonite matrix. Calcination temperature T-calc is varied from 320 degrees C to 700 degrees C. The resulting series of samples is characterized by local methods based on hyperfine interactions: Fe-57 nuclear magnetic resonance (NMR) and the Mossbauer spectroscopy. The results show that the phase composition changes significantly in dependence on calcination temperature. The amount of maghemite phase rapidly increases up to T-calc = 420 degrees C and decreases abruptly for T-calc higher than 460 degrees C. (en)
Title	Bentonite/Iron Oxide Composites: Preparation and Characterization by Hyperfine Methods Bentonite/Iron Oxide Composites: Preparation and Characterization by Hyperfine Methods (en)
skos:prefLabel	Bentonite/Iron Oxide Composites: Preparation and Characterization by Hyperfine Methods Bentonite/Iron Oxide Composites: Preparation and Characterization by Hyperfine Methods (en)
skos:notation	RIV/00216208:11320/13:10159152!RIV14-MSM-11320___
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(ED2.1.00/03.0058), S
http://linked.open...iv/cisloPeriodika	June
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Štěpánková, Helena Štěpánek, Josef Chlan, Vojtěch Kouřil, Karel Řezníček, Richard Křišťan, 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	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	63105
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10159152
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nmr; biomedicine; mossbauer-spectroscopy; magnetic nanoparticles; maghemite nanoparticles (en)
http://linked.open.../riv/klicoveSlovo	mossbauer-spectroscopy magnetic nanoparticles nmr biomedicine maghemite nanoparticles
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[B2122BADAFF0]
http://linked.open...i/riv/nazevZdroje	Journal of Nanomaterials
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Regional Centre of Advanced Technologies and Materials
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	2013
http://linked.open...iv/tvurceVysledku	Štěpánek, Josef Štěpánková, Helena Chlan, Vojtěch Křišťan, Petr Řezníček, Richard Cuda, Jan Kouřil, Karel Medrik, Ivo Polakova, Katerina Procházka, Vit
http://linked.open...ain/vavai/riv/wos	000322519000001
issn	1687-4110
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1155/2013/179794
http://localhost/t...ganizacniJednotka	11320

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