Vliv Zr jako TiO2 dopovacího iontu na fotokatalytickou degradaci 4-chlorofenolu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F07%3A00081416" target="_blank" >RIV/61388980:_____/07:00081416 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 scanningelectron 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).

Název v anglickém jazyce

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

Popis výsledku anglicky

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 scanningelectron 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).

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/1M0577" target="_blank" >1M0577: Výzkumné centrum pro nanopovrchové inženýrství</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Catalysis. B - Environmental

ISSN

0926-3373

e-ISSN

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Svazek periodika

74

Číslo periodika v rámci svazku

-

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

83-91

Kód UT WoS článku

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EID výsledku v databázi Scopus

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