TiO2 aerogel připravený nízkou teplotou sušení

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F06%3A00040429" target="_blank" >RIV/61388980:_____/06:00040429 - 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

Titania aerogel prepared by low temperature supercritical drying

Popis výsledku v původním jazyce

Mesoporous titania aerogel with high surfaces area (1086 m(2) g(-1)) were prepared by two steps: heterogeneous precipitation of aqueous solution containing TiOSO4 and ammonia, followed by continuous supercritical extraction with CO2 after replacement ofthe water with n-propanol/benzene mixture. The total pore volume of as obtained aerogel is 3.44 cm(-3) g(-1) and the main pore diameter is 20-80 nm. The structure evolution of titania aerogel during heating was studied by DTA and high temperature XRD analyses. At 450 degrees C titania aerogel transforms to polycrystalline anatase. The morphology and microstructure characteristics of both titania aerogel and anatase samples were obtained by SEM, HRTEM, BET and BJH methods. Anatase reveals high photocatalytic activity during the degradation of 4-chlorophenol in aqueous suspension.

Název v anglickém jazyce

Titania aerogel prepared by low temperature supercritical drying

Popis výsledku anglicky

Mesoporous titania aerogel with high surfaces area (1086 m(2) g(-1)) were prepared by two steps: heterogeneous precipitation of aqueous solution containing TiOSO4 and ammonia, followed by continuous supercritical extraction with CO2 after replacement ofthe water with n-propanol/benzene mixture. The total pore volume of as obtained aerogel is 3.44 cm(-3) g(-1) and the main pore diameter is 20-80 nm. The structure evolution of titania aerogel during heating was studied by DTA and high temperature XRD analyses. At 450 degrees C titania aerogel transforms to polycrystalline anatase. The morphology and microstructure characteristics of both titania aerogel and anatase samples were obtained by SEM, HRTEM, BET and BJH methods. Anatase reveals high photocatalytic activity during the degradation of 4-chlorophenol in aqueous suspension.

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

2006

Kód důvěrnosti údajů

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

Název periodika

Microporous and Mesoporous Materials

ISSN

1387-1811

e-ISSN

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Svazek periodika

91

Číslo periodika v rámci svazku

1-3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

1-6

Kód UT WoS článku

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EID výsledku v databázi Scopus

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