New Generation Photocatalysts: How Tungsten Influences the Nanostructure and Photocatalytic Activity of TiO(2) in the UV and Visible Regions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F11%3A00371850" target="_blank" >RIV/61388980:_____/11:00371850 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/am2008757" target="_blank" >http://dx.doi.org/10.1021/am2008757</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/am2008757" target="_blank" >10.1021/am2008757</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New Generation Photocatalysts: How Tungsten Influences the Nanostructure and Photocatalytic Activity of TiO(2) in the UV and Visible Regions

Popis výsledku v původním jazyce

Tungsten-doped anatase was prepared by a thermal hydrolysis of aqueous solutions of peroxo complexes of titanium and tungsten. The synthesized samples included X-ray diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, Raman spectroscopy, specific surface area, and porosity determination. W doping resulted in a decrease of the unit-cell volume of anatase at lower W contents and an increase at higher W contents. The position of the most intense Raman band ofthe E(g) mode (near 147 cm(-1)) also has a local minimum at medium-doped titania (1.1-3.6% Win titania). W doping increases the temperature of anatase-to-rutile transformation by about 100 degrees C compared with nondoped anatase. The photocatalytic activity of doped titania samples was determined by decomposition of Orange II dye during irradiation at 365 and 400 nm. Specimens with moderate W doping (1.0-3.3% W) perform best: they enhance the corresponding reaction rates 10 times at 365

Název v anglickém jazyce

New Generation Photocatalysts: How Tungsten Influences the Nanostructure and Photocatalytic Activity of TiO(2) in the UV and Visible Regions

Popis výsledku anglicky

Tungsten-doped anatase was prepared by a thermal hydrolysis of aqueous solutions of peroxo complexes of titanium and tungsten. The synthesized samples included X-ray diffraction, high-resolution transmission electron microscopy, selected area electron diffraction, Raman spectroscopy, specific surface area, and porosity determination. W doping resulted in a decrease of the unit-cell volume of anatase at lower W contents and an increase at higher W contents. The position of the most intense Raman band ofthe E(g) mode (near 147 cm(-1)) also has a local minimum at medium-doped titania (1.1-3.6% Win titania). W doping increases the temperature of anatase-to-rutile transformation by about 100 degrees C compared with nondoped anatase. The photocatalytic activity of doped titania samples was determined by decomposition of Orange II dye during irradiation at 365 and 400 nm. Specimens with moderate W doping (1.0-3.3% W) perform best: they enhance the corresponding reaction rates 10 times at 365

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/GA203%2F08%2F0334" target="_blank" >GA203/08/0334: Fotokatalytické materiály pro destrukci bojových otravných látek</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

ACS Applied Materials and Interfaces

ISSN

1944-8244

e-ISSN

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Svazek periodika

3

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

4014-4023

Kód UT WoS článku

000296128500032

EID výsledku v databázi Scopus

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