Characterization of nitrogen and fluorine co-doped titania photocatalyst: Effect of temperature on microstructure and surface activity properties

0097315 - ÚACH 2008 RIV GB eng J - Článek v odborném periodiku
Balek, V. - Li, D. - Šubrt, Jan - Večerníková, Eva - Hishita, S. - Mitsuhasi, T. - Haneda, H.
Characterization of nitrogen and fluorine co-doped titania photocatalyst: Effect of temperature on microstructure and surface activity properties.
[Charakterizace fluorem a dusíkem ko-dopovaného TiO2 fotokatalyzátoru: Vliv teploty na jeho mikrostrukturu a povrchové vlastnosti.]
Journal of Physics and Chemistry of Solids. Roč. 68, 5-6 (2007), s. 770-774. ISSN 0022-3697. E-ISSN 1879-2553
Grant CEP: GA MŠMT LC523; GA MŠMT 1M0577; GA ČR GA104/04/0467
Výzkumný záměr: CEZ:AV0Z40320502
Klíčová slova: ceramics * nanostructures * oxides
Kód oboru RIV: CA - Anorganická chemie
Impakt faktor: 0.899, rok: 2007

Nitrogen and fluorine co-doped titania photocatalyst samples to be used for air purification were prepared by spray pyrolysis using a mixed solution of TiCl4 and NH4F. Droplets of the mixed solution formed by nebulizer passed through a ceramic tube furnace under a suction of an aspirator and a titania-based powder was formed at temperatures in the range from 700 to 1000 degrees C. The resulting nanopowders were characterized by electron microscopy, X-ray diffraction, temperature programmed desorption of NH3, methods of thermal analysis, particle size, surface area and porosity determination by nitrogen adsorption. Morphology and surface activity of the samples prepared at various conditions were compared. The thermal behavior of the samples characterized by TG, DTA and ETA under air heating conditions is discussed considering the differences in samples preparation.

Fotoaktivní, N,F-kodopovaný oxid titaničitý byl připraven metodou spray pyrolysis, byla popsána struktura, fotokatalytické a povrchové vlastnosti vzorků, připravených za různých podmínek.
Trvalý link: http://hdl.handle.net/11104/0004470