Počet záznamů: 1  

The Effect of Type and Concentration of Modifier in Supercritical Carbon Dioxide on Crystallization of Nanocrystalline Titania Thin Films.

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    0481564 - UCHP-M 2019 RIV NL eng J - Článek v odborném periodiku
    Sajfrtová, Marie - Cerhová, Marie - Jandová, Věra - Dřínek, Vladislav - Daniš, E. - Matějová, L.
    The Effect of Type and Concentration of Modifier in Supercritical Carbon Dioxide on Crystallization of Nanocrystalline Titania Thin Films.
    Journal of Supercritical Fluids. Roč. 133, MAR 2018 (2018), s. 211-217. ISSN 0896-8446
    Grant CEP: GA ČR GA14-23274S
    Institucionální podpora: RVO:67985858
    Klíčová slova: titania thin film * supercritical carbon dioxide * crystallization
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Obor OECD: Physical chemistry
    Impakt faktor: 3.481, rok: 2018

    Nanostructured TiO2 anatase thin films were directly prepared using supercritical carbon dioxide (scCO2)modified by organic solvent and water in two step processing. Organic solvent used as(scCO2) modifier at 30 MPa and 40 °C in the first step of processing was in the second step changed to water with simultaneous temperature increase to 150 °C which caused anatase thin films crystallization. The effect of the type of modifier (water, methanol, ethanol and acetone), concentration of modifier (5–40 wt.%) in scCO2 and the amount of scCO2(50–200 g) passed through the high pressure column as well as the type of substrate (soda-lime glass and monocrystalline Si) on microstructure and purity of TiO2 thin films were examined in both steps of processing. The prepared thin films were characterized with respect to their (micro)structural properties by Raman spec-troscopy as well as X-ray diffraction, to their wettability by contact angle measurements and to their morphology by high resolution transmission electron microscopy.
    Trvalý link: http://hdl.handle.net/11104/0277098
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