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Non thermal preparation of photoactive titanium (IV) oxide thin layers
- Source :
- Thin Solid Films. 495:18-23
- Publication Year :
- 2006
- Publisher :
- Elsevier BV, 2006.
-
Abstract
- Titania (TiO 2 ) nanostructured particles were produced by the sol–gel method in the reverse micelle environment with a focus on the complete “low temperature methodology.” This methodology was based on utilisation of specially designed extraction methods with subcritical water, supercritical carbon dioxide and their combination to limit the content of organics and also to establish the particles' enhanced photoactivity without recourse to high temperatures. Their characteristic physical properties were described and photoactivity tests then performed. The catalytic tests were carried out in gas phase with acetone and with a low intensity source of UV. It was clearly shown that photoactive titania thin layers could be produced at low temperature, however, with activity significantly lower than observed for analogous sol–gel layers finally treated thermally. Nevertheless the designed methodology could be referred to as the process adaptable for plastic substrates and yielding photoactive thin films.
- Subjects :
- Supercritical carbon dioxide
Thin layers
Materials science
business.industry
Metals and Alloys
Oxide
Nanoparticle
chemistry.chemical_element
Surfaces and Interfaces
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
Optics
chemistry
Chemical engineering
Titanium dioxide
Materials Chemistry
Photocatalysis
business
Sol-gel
Titanium
Subjects
Details
- ISSN :
- 00406090
- Volume :
- 495
- Database :
- OpenAIRE
- Journal :
- Thin Solid Films
- Accession number :
- edsair.doi...........7639d25223926e1118635bde0c15c2a2