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	Optimization of deposition parameters in order to create a photocatalytic titanium oxide films produced by PECVD PEKÁREK, Michal This thesis presents Photocatalytic TiOx layers created by own PECVD reactor assembled in the building of Department of Applied Physics and Technics. Parameters of depositions were optimalized as well as the PECVD reactor itself. Final layers are compared to layers made by Degussa P25. As a result based on the included measurements, this thesis tries to answer the question whether PECVD is the suitable method for depositions of photocatalytic layers. Detailed record
	Catalytic and photocatalytic processes on 18O-labeled TiO2 Kavan, Ladislav ; Zukalová, Markéta ; Ferus, Martin ; Kürti, J. ; Koltai, J. ; Civiš, Svatopluk 18O-isotope labelled titania (anatase, rutile) was synthesized. The products were characterized by Raman spectra together with their quantum chemical modelling. The interaction with carbon dioxide was investigated using high-resolution FTIR spectroscopy, in dark and upon UV-excitation. The oxygen isotope exchange at the Ti18O2/C16O2 interface was elucidated. The C18O2 was formed as the dominating final product with a minor content of C16O18O. The rate of oxygen-isotope exchange is highly sensitive to the conditions of the titania pretreatment. The vacuum-annealed Ti18O2 at 450 C exhibited a very high spontaneous oxygen exchange activity with gaseous C16O2. A mechanism for the 18O/16O exchange process is discussed at the molecular level. The photocatalytic formation of methane, acetylene and C16O released from the Ti18O2 surface was triggered by an XeCl excimer laser irradiation. Detailed record
	Optimized Doped Titania for Photocatalysis Applications Krejčíková, Simona ; Kočí, K. ; Obalová, L. ; Čapek, L. ; Šolcová, Olga This study is focused on preparation and characterization of the specially designed TIO2 and its modified versions (doped by metal) suitable for photodegradations of organic pollutants. Fulltext: PDF Detailed record
	TiO2 and WO3 thin films: Characterization, adsorption and photocatalytic degradation of oxalic acid and methylene blue Brüger, A. ; Hrazdira, D. ; Waldner, G. ; Krýsa, J. ; Jirkovský, Jaromír ; Vinek, H. ; Schlögl, R. ; Rupprechter, G. The importance of wastewater treatment needs no explanation. Thin transparent TiO2 and WO3 layers have shown photocatalytic activity in the decomposition of water pollutants and are promissing candidates for wide-scale applications. Detailed record
	Application of photocatalysis on TiO2 for pesticide removal Krýsa, J. ; Jirkovský, Jaromír Pesticides contaminate surface water mainly by washing from fields and crop-plant and by wind during aerial spraying. They may discrupt biologic equilibrium in streams due to their toxic effect on biocenosis. They can also unfavorably influence the self-cleaning ability of water, its odour and taste. Surface water is still treated and distributed as drinking water to more than half of the population in the Czech Republic supplied from public water conduits. Detailed record
	Reaction order of photocatalytic degradation of various organic compounds Krýsa, J. ; Waldner, G. ; Jirkovský, Jaromír ; Grabner, G. The kinetic of photocatalytic degradation of four different model organic compounds, formic acid (FA), oxalic acid (OA), 4-chlorophenol (4-CP) and 3-(4-chlorophenyl)-1,1-dimethylurea (the herbicide monuron), on irradiated titanium dioxide was compared. Detailed record
	Surface complexation and charge transfer processes in colloidal semiconductors studied by laser flash photolysis Grabner, G. ; Jirkovský, Jaromír Aqueous colloidal solutions of quantum sized particles of TiO2 undergo an ageing process beginning with their preparation. In course of time, the mean size of nanoparticles is gradually increasing and some of their physico-chemical properties are changing as well. In the present study, the decrease of the spectral blue shift of the semiconductor absorption threshold was measured to determine the corresponding changes of band gap energy of the Q-TiO2 particles. Detailed record
	Determination of quantum yield of photocatalytic degradation in suspension and on thin film of titanium dioxide Měšťánková, Hana ; Zita, J. ; Navrátil, K. ; Krýsa, J. ; Jirkovský, Jaromír The development of novel photocatalytic materials based on nanocrystalline titanium dioxide is a rapidly growing field of science and technology. Parallel to the industrial production and practical use of these materials, simple but reliable procedures for the characterization of their photoactivity are necessary. The testing methods are usually based on relative comparison of the photoefficiency of a probe to a standard under certain conditions. Detailed record
	Preparation and characterization of TiO2 films deposited by liquid phase Szatmáry, Lórant ; Šubrt, Jan ; Bezdička, Petr ; Jirkovský, Jaromír ; Kete, M. ; Štangar, U. L. The aim of this work was to prepare the TiO2 layer at different reaction temperatures and to determine the effect of composition and temperature on the photocatalytic activity. Detailed record
	Test method for self cleaning performance Peterka, F. ; Jirkovský, Jaromír ; Sťahel, P. ; Navrátil, Z. ; Buček, A. The method for self cleaning performance is based on combination of both effects og photocatalytic function, which are ox/red reaction and surface hydrophilicity. When oleic acid, as organic material deposited on tested photocatalytic material is decomposed, surface is becoming hydrophilic. Detailed record

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