Original title:
Modification of TiO2 electronic properties by means of chemical treatment (doping)
Authors:
Zukalová, Markéta ; Lásková, Barbora ; Procházka, Jan ; Bastl, Zdeněk ; Havlíček, D. ; Kavan, Ladislav Document type: Papers Conference/Event: New trends in application of photo and electro catalysis. The Czech-Austrian workshop /4./, Hnanice (CZ), 2011-12-05 / 2011-12-07
Year:
2012
Language:
eng Abstract:
The product of the reaction of nanofibrous anatase with ammonia in gas phase is nanofibrous cubic titanium oxynitride, c-TiO2N3. In contrary to the preparation of cubic titaniurn oxynitride from microcrystalline TiO2, requiring temperatures above 800°C, the conversion of nanofibrous TiO2 to TiO2N3 is completed at about 500°C due to its enhanced chemical reactivity. This conversion is fully reversible; the product of the back reaction is again nanofibrous Ti02. By the thermal treatment of nanofibrous anatase in H2 flow at 800°C for 2 hours the mixture of black disordered anatase, rutile and titanium suboxides was prepared. Evidently, particular phases can be synthesized simply by tuning the temperature of the treatment, which is a subject of the further research.
Keywords:
doping; titanium dioxide Project no.: CEZ:AV0Z40400503 (CEP), IAA400400804 (CEP), KAN200100801 (CEP) Funding provider: GA AV ČR, GA AV ČR Host item entry: New trends in application of photo and electro catalysis. Proceedings of the 4th Czech-Austrian workshop, ISBN 978-80-7080-809-2
Institution: J. Heyrovsky Institute of Physical Chemistry AS ČR
(web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences. Original record: http://hdl.handle.net/11104/0222095