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Photocatalytic oxidation of gaseous toluene on titania/mesoporous silica powders in a fluidized-bed reactor
- 1.0359746 - ÚFCH JH 2012 RIV NL eng J - Journal Article
Tasbihi, M. - Štangar, U. L. - Černigoj, U. - Jirkovský, Jaromír - Bakardjieva, Snejana - Tušar, N. N.
Photocatalytic oxidation of gaseous toluene on titania/mesoporous silica powders in a fluidized-bed reactor.
Catalysis Today. Roč. 161, č. 1 (2011), s. 181-188. ISSN 0920-5861. E-ISSN 1873-4308
Institutional research plan: CEZ:AV0Z40400503; CEZ:AV0Z40320502
Keywords : titanium dioxide * mesoporous silica * photocatalysis
Subject RIV: CG - Electrochemistry; CA - Inorganic Chemistry (UACH-T)
Impact factor: 3.407, year: 2011
The photocatalytic degradation of toluene was carried out on titania/mesoporous silica photocatalysts in a self-constructed gaseous fluidized-bed photoreactor equipped with UVA light source. The powder photocatalysts were synthesized by incorporation of aqueous titania sol (as a photoactive component), into silica mesoporous materials (as a high-surface-area support), via the sol-gel impregnation method. SBA-15 was used as an ordered and KIL-2 as a disordered mesoporous silica support. The Ti/Si nominal molar ratio was adjusted to 1/2, 1/1 and 2/1. The photocatalysts were characterized by X-ray diffraction (XRD), nitrogen sorption (BET), UV-vis-NIR diffuse reflectance spectroscopy (DRS), Fourier transform infrared spectroscopy (FT-IR) and high-resolution transmission electron microscopy (HR-TEM). The effects of Ti/Si molar ratio and of the mesoporous silica structure were investigated measuring adsorption capacity and photocatalytic degradation of toluene.
Permanent Link: http://hdl.handle.net/11104/0197468
Number of the records: 1