About: Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Nanosized titanium dioxide photocatalysts with anatase structure or mixture of anatase and rutile phases have been synthesized. Homogeneous precipitation of aqueous solutions containing TiOSO 4 and ammonia and following treatment with H 2O 2 was used to prepare porous yellowish (Ti-Per) gel. The gel was lyophilized for 48h and (Ti-Per)LYO-powder was obtained. Single phase anatase TiO 2 samples were prepared by heating of the (Ti-Per)LYO powder. The lamella-like particle morphology of TiO 2 samples determined by SEM were stable in air up to 950°C. The structure evolution during heating of the starting (Ti-Per)LYO powder was studied by DTA and XRD analyses in overall temperature range of phase transformation. The morphology and microstucture characteristics were also obtained by HRTEM and BET methods. The photocatalytic activity of the sample titania TI-LYO/950 heated to 950°C in air contained 78.4% anatase and 21.6% rutile was higher than standard Degussa P25. Titania sample TI-LYO/950 reveals the highest catalytic activity during the photocatalyzed degradation course of 4-chlorophenol in aqueous suspension under UV-irradiation. Nanosized titanium dioxide photocatalysts with anatase structure or mixture of anatase and rutile phases have been synthesized. Homogeneous precipitation of aqueous solutions containing TiOSO 4 and ammonia and following treatment with H 2O 2 was used to prepare porous yellowish (Ti-Per) gel. The gel was lyophilized for 48h and (Ti-Per)LYO-powder was obtained. Single phase anatase TiO 2 samples were prepared by heating of the (Ti-Per)LYO powder. The lamella-like particle morphology of TiO 2 samples determined by SEM were stable in air up to 950°C. The structure evolution during heating of the starting (Ti-Per)LYO powder was studied by DTA and XRD analyses in overall temperature range of phase transformation. The morphology and microstucture characteristics were also obtained by HRTEM and BET methods. The photocatalytic activity of the sample titania TI-LYO/950 heated to 950°C in air contained 78.4% anatase and 21.6% rutile was higher than standard Degussa P25. Titania sample TI-LYO/950 reveals the highest catalytic activity during the photocatalyzed degradation course of 4-chlorophenol in aqueous suspension under UV-irradiation. (en)
Title	Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel (en)
skos:prefLabel	Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel Photoactivity of anatase-rutile TiO 2 nanocrystalline mixtures obtained by heat treatment of titanium peroxide gel (en)
skos:notation	RIV/61388980:_____/12:00441606!RIV15-AV0-61388980
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(1M0577), P(LC523)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Pulišová, Petra Szatmary, Lorant Šubrt, Jan Bakardjieva, Snejana Svobodová, Monika
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	Ústav anorganické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	158533
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/12:00441606
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Catalyst activity; Gels; Heating; Morphology; Oxide minerals; Photocatalysis (en)
http://linked.open.../riv/klicoveSlovo	Gels Photocatalysis Heating Morphology Catalyst activity Oxide minerals
http://linked.open...ontrolniKodProRIV	[C95EB9DB7EE4]
http://linked.open...v/mistoKonaniAkce	San Francisco
http://linked.open...i/riv/mistoVydani	New York
http://linked.open...i/riv/nazevZdroje	Materials Research Society Symposium Proceedings
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...vavai/riv/projekt	Perspective inorganic materials Research centre for nanostructures engineering
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Pulišová, Petra Szatmáry, Lórant Šubrt, Jan Bakardjieva, Snejana Maříková, Monika
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2011-04-25 (xsd:date)
issn	0272-9172
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1557/opl.2011.1132
http://purl.org/ne...btex#hasPublisher	Cambridge University Press
https://schema.org/isbn	978-1-60511-329-6

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