Number of the records: 1
The Effect of Type and Concentration of Modifier in Supercritical Carbon Dioxide on Crystallization of Nanocrystalline Titania Thin Films.
- 1.
SYSNO ASEP 0481564 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The Effect of Type and Concentration of Modifier in Supercritical Carbon Dioxide on Crystallization of Nanocrystalline Titania Thin Films. Author(s) Sajfrtová, Marie (UCHP-M) RID, ORCID, SAI
Cerhová, Marie (UCHP-M) SAI
Jandová, Věra (UCHP-M) RID, ORCID, SAI
Dřínek, Vladislav (UCHP-M) RID, ORCID, SAI
Daniš, E. (CZ)
Matějová, L. (CZ)Source Title Journal of Supercritical Fluids. - : Elsevier - ISSN 0896-8446
Roč. 133, MAR 2018 (2018), s. 211-217Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords titania thin film ; supercritical carbon dioxide ; crystallization Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GA14-23274S GA ČR - Czech Science Foundation (CSF) Institutional support UCHP-M - RVO:67985858 UT WOS 000426234000026 EID SCOPUS 85032872745 DOI 10.1016/j.supflu.2017.10.012 Annotation 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. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2019
Number of the records: 1