Effect of titanium source and sol-gel TiO2 thin film formation parameters on its morphology and photocatalytic activity
Authors:
- Piotr Dulian,
- Jan Zajic,
- Witold Żukowski
Abstract
TiO2 thin films with different surface structure have been prepared from alkoxide solutions by the sol-gel method using different cationic precursors and heat treatment techniques. The effect of using titanium isopropoxide as well as titanium butoxide as a titanium source on the surface structure and photocatalytic activity of the resultant thin films was studied. Significant differences in the rate of hydrolysis and condensation reactions during the sol-gel synthesis were observed for these titanium precursors. This had a direct influence on the morphology of the as-prepared TiO2 films. Higher quality oxide coatings were obtained from titanium isopropoxide. They were characterized by a smaller grain size, improved surface roughness and uniform coverage of the glass substrate. A beneficial effect of calcination process after each sol application cycle in contrast to single step calcination after all dip-coating cycles was observed. Photocatalytic degradation tests showed that methyl orange was decolorized in the presence of all prepared TiO2 films by exposing their aqueous solutions to UV light (lambda = 254 nm). The highest photocatalytic activity had the TiO2 layer produced using titanium isopropoxide.
- Record ID
- CUTa9e4b8480980436fa4a4365dd78f8252
- Publication categories
- ;
- Author
- Journal series
- Materials Science-Poland, ISSN 2083-1331, [2083-134X, 0137-1339]
- Issue year
- 2020
- Vol
- 38
- No
- 3
- Pages
- 424-433
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 432-433; Bibliografia (liczba pozycji) - 32; Oznaczenie streszczenia - Streszcz. ang.; Data udostępnienia on-line - 2020-12-12; Numeracja w czasopiśmie - Vol. 38, Iss. 3
- Keywords in English
- TiO2 thin film, sol-gel, photocatalysis
- DOI
- DOI:10.2478/msp-2020-0056 Opening in a new tab
- URL
- https://content.sciendo.com/view/journals/msp/ahead-of-print/article-10.2478-msp-2020-0056/article-10.2478-msp-2020-0056.xml Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 70
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTa9e4b8480980436fa4a4365dd78f8252/
- URN
urn:pkr-prod:CUTa9e4b8480980436fa4a4365dd78f8252
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