Use of Water- And Ethanol-Modified Supercritical Carbon Dioxide for Direct Preparation of Crystalline Monolithic TiO2 Aerogels.

0482012 - ÚCHP 2018 RIV CZ eng C - Conference Paper (international conference)
Cerhová, Marie - Sajfrtová, Marie - Matějová, L. - Dřínek, Vladislav - Daniš, E. - Jandová, Věra
Use of Water- And Ethanol-Modified Supercritical Carbon Dioxide for Direct Preparation of Crystalline Monolithic TiO2 Aerogels.
Book of Abstracts. Prague: Czech Society of Industrial Chemistry, 2017, P105. ISBN 978-80-86238-62-3.
[International Conference on Chemical Technology /5./. Mikulov (CZ), 10.04.2017-12.04.2017]
Institutional support: RVO:67985858
Keywords : photocatalytic activity * carbon dioxide * titania aerogels
OECD category: Chemical process engineering

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.
Permanent Link: http://hdl.handle.net/11104/0277415