About: Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We examined the sonochemical synthesis of CoFe2O4. Composite nanoscopic particles consisting of Co-Fe oxide particles and an organic matrix were prepared by sonolysis of mixtures of 2,4-pentanedionato complexes, M(acac)n, M = Fe, Co; n = 2, 3. The XRD results showed that phase pure CoFe2O4 samples were prepared with a molar content of Co:Fe from 1:1.3 to 1:2.0. Addition of variable amounts of water was found to facilitate the decomposition of precursor complexes. That allowed control of the organics content and the BET surface area of the oxide nanoparticles. Powders with specific surface area as high as 218 m2 g-1 were obtained. FE-SEM was used to examine particle shape, size, and size distribution with an estimated diameter of 20-30 nm. Variable temperature XRD also revealed the spinel crystallization on heating. A small particle size below 20 nm of the crystalline CoFe2O4 is retained up to 600 oC. We examined the sonochemical synthesis of CoFe2O4. Composite nanoscopic particles consisting of Co-Fe oxide particles and an organic matrix were prepared by sonolysis of mixtures of 2,4-pentanedionato complexes, M(acac)n, M = Fe, Co; n = 2, 3. The XRD results showed that phase pure CoFe2O4 samples were prepared with a molar content of Co:Fe from 1:1.3 to 1:2.0. Addition of variable amounts of water was found to facilitate the decomposition of precursor complexes. That allowed control of the organics content and the BET surface area of the oxide nanoparticles. Powders with specific surface area as high as 218 m2 g-1 were obtained. FE-SEM was used to examine particle shape, size, and size distribution with an estimated diameter of 20-30 nm. Variable temperature XRD also revealed the spinel crystallization on heating. A small particle size below 20 nm of the crystalline CoFe2O4 is retained up to 600 oC. (en)
Title	Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes (en)
skos:prefLabel	Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes (en)
skos:notation	RIV/00216224:14310/08:00026052!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM0021622410)
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Pinkas, Jiří Moravec, Zdeněk Zbořil, Radek Bezdička, Petr Ostřížek, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	381616
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/08:00026052
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Sonochemistry; Iron; Cobalt; Oxides; Ferrite; Nanoparticles (en)
http://linked.open.../riv/klicoveSlovo	Nanoparticles Iron Oxides Ferrite Sonochemistry Cobalt
http://linked.open...ontrolniKodProRIV	[DE3E60BCAD13]
http://linked.open...v/mistoKonaniAkce	La Grande Motte, Francie
http://linked.open...i/riv/mistoVydani	Basancon, Francie
http://linked.open...i/riv/nazevZdroje	11 th Meeting of the European Society of Sonochemistry
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...UplatneniVysledku	2008
http://linked.open...iv/tvurceVysledku	Bezdička, Petr Moravec, Zdeněk Pinkas, Jiří Zbořil, Radek Ostřížek, Petr
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2008-01-01 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Physical and chemical properties of advanced materials and structures
issn	1350-4177
number of pages	2 (xsd:int)
http://purl.org/ne...btex#hasPublisher	UTINAM Universite de Franche-Comte
http://localhost/t...ganizacniJednotka	14310

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