Highly photoactive anatase foams prepared from lyophilized aqueous colloids of peroxo-polytitanic acid

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F15%3A00438977" target="_blank" >RIV/61388980:_____/15:00438977 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cattod.2014.04.022" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2014.04.022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2014.04.022" target="_blank" >10.1016/j.cattod.2014.04.022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Highly photoactive anatase foams prepared from lyophilized aqueous colloids of peroxo-polytitanic acid

Popis výsledku v původním jazyce

Peroxo-polytitanic acid foams annealed at temperature above 500 degrees C lose volatile components and excess of oxygen providing anatase in the form of thin leaves consisting of intergrown nanocrystalline anatase particles which transform at temperatures above 850 degrees C to rutile. The size and shape of the initial leaflets forming the foam is preserved up to similar to 900 degrees C. We observed that the annealed material is highly photoactive, owing to highly anisotropic shape of anatase aggregates and their perfect crystallinity. Outstanding photocatalytic activity determined by measuring the kinetics of degradation of Methylene Blue (MB) and 4-chlorphenol (4-CP) as well as measuring the formation of hydroxyl radical spin adducts by EPR spectroscopy was observed. All three methods demonstrated significantly higher activity in comparison with the Degussa P25 photocatalyst. Both methods used for photoactivity tests provided similar results, the activity increased with increasing a

Název v anglickém jazyce

Highly photoactive anatase foams prepared from lyophilized aqueous colloids of peroxo-polytitanic acid

Popis výsledku anglicky

Peroxo-polytitanic acid foams annealed at temperature above 500 degrees C lose volatile components and excess of oxygen providing anatase in the form of thin leaves consisting of intergrown nanocrystalline anatase particles which transform at temperatures above 850 degrees C to rutile. The size and shape of the initial leaflets forming the foam is preserved up to similar to 900 degrees C. We observed that the annealed material is highly photoactive, owing to highly anisotropic shape of anatase aggregates and their perfect crystallinity. Outstanding photocatalytic activity determined by measuring the kinetics of degradation of Methylene Blue (MB) and 4-chlorphenol (4-CP) as well as measuring the formation of hydroxyl radical spin adducts by EPR spectroscopy was observed. All three methods demonstrated significantly higher activity in comparison with the Degussa P25 photocatalyst. Both methods used for photoactivity tests provided similar results, the activity increased with increasing a

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/GA14-20744S" target="_blank" >GA14-20744S: Studium chemických a elektrochemických procesů ovlivňujících růst samoorganizovaných TiO2 nanotrubic v roztocích</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

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Svazek periodika

240

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

107-113

Kód UT WoS článku

000345124100017

EID výsledku v databázi Scopus

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