About: Influence of Zr as TiO2 doping ion on photocatalytic degradation of 4-chlorophenol

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About: Influence of Zr as TiO2 doping ion on photocatalytic degradation of 4-chlorophenol Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Na přípravu Zr dopovaného TiO2 bylo použito homogenní spolusrážení TiOSO4 a ZrCl4. Jako srážecí činidlo byla použita močovina. Připravený fotokatalyzátor s obsahem 0.8 mol% Zr ve struktuře TiO2 byl zahřát na 900 C a produkt byl dále použit pro fotokatalytickou degradaci 4-chlorfenolu. Rychlostní konstanta je 1.5 násobně vyšší než pro Degussu P25. (cs) Nanosized Zr-doped TiO2 photocatalysts were prepared using the homogenous co-precipitation method from aqueous solutions containing TiOSO4 and ZrCl4 by urea as a precipitation agent, with subsequently annealing at various temperatures of 400–1100 °C. Structural changes of the photocatalysts upon heating were studied by X-ray powder diffraction. Anatase-to-rutile phase transformation is shifted to higher temperatures in comparison with undoped TiO2. Spherical clusters morphology was revealed by scanning electron microscopy. Energy dispersive X-ray spectrometry confirmed a Zr content of 0.8 mol% in all samples. The spectral thresholds are shifted toward visible region, except for the unheated catalyst. Photocatalytic degradation of 4-chlorophenol was employed to test photoactivity of the catalyst. The photocatalyst annealed at 900 °C has a 1.5 times higher degradation rate than the standard TiO2 P25 (Degussa). Nanosized Zr-doped TiO2 photocatalysts were prepared using the homogenous co-precipitation method from aqueous solutions containing TiOSO4 and ZrCl4 by urea as a precipitation agent, with subsequently annealing at various temperatures of 400–1100 °C. Structural changes of the photocatalysts upon heating were studied by X-ray powder diffraction. Anatase-to-rutile phase transformation is shifted to higher temperatures in comparison with undoped TiO2. Spherical clusters morphology was revealed by scanning electron microscopy. Energy dispersive X-ray spectrometry confirmed a Zr content of 0.8 mol% in all samples. The spectral thresholds are shifted toward visible region, except for the unheated catalyst. Photocatalytic degradation of 4-chlorophenol was employed to test photoactivity of the catalyst. The photocatalyst annealed at 900 °C has a 1.5 times higher degradation rate than the standard TiO2 P25 (Degussa). (en)
Title	Influence of Zr as TiO2 doping ion on photocatalytic degradation of 4-chlorophenol Influence of Zr as TiO2 doping ion on photocatalytic degradation of 4-chlorophenol (en) Vliv Zr jako TiO2 dopovacího iontu na fotokatalytickou degradaci 4-chlorofenolu (cs)
skos:prefLabel	Influence of Zr as TiO2 doping ion on photocatalytic degradation of 4-chlorophenol Influence of Zr as TiO2 doping ion on photocatalytic degradation of 4-chlorophenol (en) Vliv Zr jako TiO2 dopovacího iontu na fotokatalytickou degradaci 4-chlorofenolu (cs)
skos:notation	RIV/61388980:_____/07:00081416!RIV07-MSM-61388980
http://linked.open.../vavai/riv/strany	83;91
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1M0577), Z(AV0Z40320502), Z(AV0Z40400503)
http://linked.open...iv/cisloPeriodika	-
http://linked.open...vai/riv/dodaniDat	2007
http://linked.open...aciTvurceVysledku	Szatmary, Lorant Klementová, Mariana Šubrt, Jan Bezdička, Petr Bakardjieva, Snejana Lukáč, Jozef
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	426509
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/07:00081416
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Zr-doped TiO2; anatase; rutile (en)
http://linked.open.../riv/klicoveSlovo	anatase Zr-doped TiO2 rutile
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[CDCE0EDF8317]
http://linked.open...i/riv/nazevZdroje	Applied Catalysis. B - Environmental
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Research centre for nanostructures engineering
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	74
http://linked.open...iv/tvurceVysledku	Bezdička, Petr Jirkovský, Jaromír Klementová, Mariana Szatmary, Lorant Šubrt, Jan Bakardjieva, Snejana Bastl, Zdeněk Lukáč, Jozef
http://linked.open...n/vavai/riv/zamer	Design, syntéza a charakterizace klastrů, kompozitů, komplexů a dalších sloučenin na bázi anorganických látek; mechanismy a kinetika jejich interakcí Struktura, reaktivita a dynamika molekulárních a biomolekulárních systémů: teorie, experiment, aplikace
issn	0926-3373
number of pages	9 (xsd:int)

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