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Národní úložiště šedé literatury Nalezeno 2 záznamů.  Hledání trvalo 0.01 vteřin. 
Synthesis and photocatalytic applications of titanium dioxide
 Solný, Tomáš ; Drbohlavová, Jana (oponent) ; Vlček,, Jozef (oponent) ; Ptáček, Petr (vedoucí práce)
Hydrolysis conditions for different Ti-alkoxides were examined considering the impact of water to alkoxide ratio and temperature. The prepared hydrolysates and sintered TiO2 nanoparticles were examined with XRD, DTA – TGA, SEM – EDS, BET and PCCS analysis in order to identify the impact of hydrolysis on properties of prepared anatase particles. Magnetite nanoparticles were synthetized by easy one step precipitation method from Mohr´s salt solution and their crystallinity, size and surface properties were examined investigating the influence of temperature and coating by polycarboxylate ether superplasticizer. For immobilization of TiO2 on surfaces of magnetite combined method using the selected nanoparticles of TiO2 and Ti-alkoxides hydrolysis is performed in order to obtain photocatalytically active core–shell powder catalysator with enhanced adsorptive properties. Also the investigation on the applications of TiO2 on surfaces of Mn-Zn ferrites is done with studying the surface treatment by CVD deposition of C and Au layer. Photocatalytic activity of selected prepared photocatalysators is evaluated upon decomposition of methylene blue and isopropanolic and ethanolic vapors for Mn-Zn ferrites in experimental chemical reactor with magnetically holded powdered photocatalysator beds.
Úplný záznam
Synthesis and photocatalytic applications of titanium dioxide
 Solný, Tomáš ; Drbohlavová, Jana (oponent) ; Vlček,, Jozef (oponent) ; Ptáček, Petr (vedoucí práce)
Hydrolysis conditions for different Ti-alkoxides were examined considering the impact of water to alkoxide ratio and temperature. The prepared hydrolysates and sintered TiO2 nanoparticles were examined with XRD, DTA – TGA, SEM – EDS, BET and PCCS analysis in order to identify the impact of hydrolysis on properties of prepared anatase particles. Magnetite nanoparticles were synthetized by easy one step precipitation method from Mohr´s salt solution and their crystallinity, size and surface properties were examined investigating the influence of temperature and coating by polycarboxylate ether superplasticizer. For immobilization of TiO2 on surfaces of magnetite combined method using the selected nanoparticles of TiO2 and Ti-alkoxides hydrolysis is performed in order to obtain photocatalytically active core–shell powder catalysator with enhanced adsorptive properties. Also the investigation on the applications of TiO2 on surfaces of Mn-Zn ferrites is done with studying the surface treatment by CVD deposition of C and Au layer. Photocatalytic activity of selected prepared photocatalysators is evaluated upon decomposition of methylene blue and isopropanolic and ethanolic vapors for Mn-Zn ferrites in experimental chemical reactor with magnetically holded powdered photocatalysator beds.
Úplný záznam

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