Infrared Laser Radiation-Produced TiO-doped Si/SiOx/SiO2 Nanocomposite – Entry to TiO-containing Materials.

0463044 - ÚCHP 2017 RIV CH eng J - Journal Article
Jandová, Věra - Pokorná, Dana - Kupčík, Jaroslav - Dytrych, Pavel - Cuřínová, Petra - Fajgar, Radek - Pola, Josef
Infrared Laser Radiation-Produced TiO-doped Si/SiOx/SiO2 Nanocomposite – Entry to TiO-containing Materials.
Journal of Photochemistry and Photobiology A-Chemistry. Roč. 332, JAN 1 (2017), s. 376-383. ISSN 1010-6030. E-ISSN 1873-2666
R&D Projects: GA TA ČR TA04010169
Institutional support: RVO:67985858 ; RVO:61388980
Keywords : thin film deposition * IR laser ablation * red-shifted UV–vis spectrum
OECD category: Physical chemistry; Inorganic and nuclear chemistry (UACH-T)
Impact factor: 2.891, year: 2017

Infrared laser-induced ablation of an equimolar titanium monoxide - silicon monoxide mixture allows deposition of a continuous TiO-doped Si/SiOx/SiO2 film which undergoes collapse into micron-sized cylindrical-shaped plates. The film and the scrolls were analyzed by Raman and FTIR spectroscopy and electron microscopy and confirmed to be amorphous and composed of TiO nano-objects in prevailing Si/SiOx/SiO2 phase. The film shows a broad red-shifted UV-vis absorption when compared to various TiO2 or TiO2-SiO2 composite materials. In aqueous solutions of Methylene Blue, it enhances the rate of visible light-induced decolorization of this dye. It also reduces Methylene Blue to leuco-Methylene Blue in the dark. These properties of the TiO-incorporated Si/SiOx/SiO2 nanocomposite may stimulate further interest in laser syntheses and applications of a broader class of TiO-containing materials.
Permanent Link: http://hdl.handle.net/11104/0265236