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Two-component transparent TiO2/SiO2 and TiO2/PDMS films as efficient photocatalysts for environmental cleaning
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SYSNO ASEP 0308925 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Two-component transparent TiO2/SiO2 and TiO2/PDMS films as efficient photocatalysts for environmental cleaning Title Dvousložkové transparentní TiO2/SiO2 a TiO2/PDMS filmy jako účinné fotokatalyzátory pro zvyšování čistoty životního prostředí Author(s) Novotná, P. (CZ)
Zita, J. (CZ)
Krýsa, J. (CZ)
Kalousek, Vít (UFCH-W)
Rathouský, Jiří (UFCH-W) RID, ORCIDSource Title Applied Catalysis B - Environmental. - : Elsevier - ISSN 0926-3373
Roč. 79, č. 2 (2007), s. 179-185Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords TiO2 ; SiO2 ; PDMS ; thin film Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects 1M0577 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) DOI 10.1016/j.apcatb.2007.10.012 Annotation TiO2 films modified either with polydimethylsiloxane (PDMS) or SiO2 were prepared by a sol–gel method combined with dip-coating. TiO2/PDMS films have a lower abrasion resistance and are more hydrophobic than the TiO2/SiO2 ones. As the TiO2/PDMS films calcined at 350–450 oC exhibit developed micro-mesoporosity, they adsorb considerable amounts of methylene blue from its water solution. However, their photocatalytic activity in the decomposition of this dye is very low. On the contrary, these films are highly active in the degradation of the layers of methyl stearate. This efficiency variation is explained by the film-developed porosity. The films modified with SiO2 have very good abrasion resistance and can be easily converted by weak UV-illumination into substantially stable superhydrophilic state. Furthermore, they exhibit good photocatalytic properties in both test reactions. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2008
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