Název:
Use of Water- And Ethanol-Modified Supercritical Carbon Dioxide for Direct Preparation of Crystalline Monolithic TiO2 Aerogels.
Autoři:
Cerhová, Marie ; Sajfrtová, Marie ; Matějová, L. ; Dřínek, Vladislav ; Daniš, E. ; Jandová, Věra Typ dokumentu: Příspěvky z konference Konference/Akce: International Conference on Chemical Technology /5./, Mikulov (CZ), 20170410
Rok:
2017
Jazyk:
eng
Abstrakt: We studied a combination of supercritical CO2, water and ethanol for the preparation of crystalline and pure nanostructured TiO2 without any thermal processing. The effect of temperature (40-150 °C) and sequence on structural and textural properties was investigated at constant pressure of 30 MPa. The prepared aerogels were characterized with respect to the (micro)structural properties by Raman spectroscopy and X-ray diffraction. The textural properties such as specific surface area, content of mesoporous and volume of microporous were determined from nitrogen physisorption and skeletal density by helium pycnometry measurements.
Klíčová slova:
carbon dioxide; photocatalytic activity; titania aerogels Zdrojový dokument: Book of Abstracts, ISBN 978-80-86238-62-3
Práva: Dílo je chráněno podle autorského zákona č. 121/2000 Sb.