"A comparative study into the photocatalytic properties of thin mesoporous layers of TiO2 with controlled mesoporosity" . "253874200011" . "A comparative study into the photocatalytic properties of thin mesoporous layers of TiO2 with controlled mesoporosity" . . . . . "Srovn\u00E1vac\u00ED studie fotokatalytick\u00FDch vlastnost\u00ED tenk\u00FDch mesopor\u00E9zn\u00EDch vrstev TiO2 s \u0159\u00EDzenou mesoporozitou"@cs . "Mesoporous films of TiO2 were prepared by a sol-gel procedure using a Pluronic (R) block copolymer and the dip-coating technique. The film thickness was controlled by changing the film withdrawal rate and by repetitive coatings. The amount of dye molecules adsorbed onto the mesoporous film depends on the dye properties, with thionine and methylene blue being more strongly adsorbed than rhodamine B, methyl orange and methyl red. The photocatalytic efficiency of the degradation of these dyes strongly depends on their respective degradation mechanism. It was found that the optimum efficiency is achieved when the target molecule is adsorbed only to some extent thus enabling its decomposition directly by the attack of holes. On the other hand, secondary oxidizing species such as O-2(center dot-) and HO2 center dot but most likely even OH center dot play a crucial role in the oxidation mechanism, which is particularly evident in the case of methylene red." . "354088" . "Tschirch, J." . . . "Rathousk\u00FD, Ji\u0159\u00ED" . "Srovn\u00E1vac\u00ED studie fotokatalytick\u00FDch vlastnost\u00ED tenk\u00FDch mesopor\u00E9zn\u00EDch vrstev TiO2 s \u0159\u00EDzenou mesoporozitou"@cs . "1010-6030" . "[E5EC0339C425]" . . "P(1M0577), Z(AV0Z40400503)" . "A comparative study into the photocatalytic properties of thin mesoporous layers of TiO2 with controlled mesoporosity"@en . "194" . . . "Wark, M." . "Mesopor\u00E9zn\u00ED filmy TiO2 byly p\u0159ipraveny metodou sol-gel s vyu\u017Eit\u00EDm blokov\u00E9ho kopolymeru Pluronic a techniky dip-coating. Tlou\u0161\u0165ka film\u016F byla \u0159\u00EDzena rychlost\u00ED vytahov\u00E1n\u00ED ze solu a opakovan\u00FDm nan\u00E1\u0161en\u00EDm. Mno\u017Estv\u00ED molekul barviv adsorbovan\u00FDch na mesopor\u00E9zn\u00EDch filmech z\u00E1vis\u00ED na vlastnostech barviva. Thionin a methylenov\u00E1 mod\u0159 jsou siln\u011Bji adsorbov\u00E1ny ne\u017E rhodamin B, methyloran\u017E a methyl\u010Derve\u0148. Fotokatalytick\u00E1 \u00FA\u010Dinnost degradace t\u011Bchto barviv v\u00FDrazn\u011B z\u00E1vis\u00ED na p\u0159\u00EDslu\u0161n\u00E9m degrada\u010Dn\u00EDm mechanismu. Optim\u00E1ln\u00ED \u00FA\u010Dinnosti je dosa\u017Eeno, kdy\u017E je c\u00EDlov\u00E1 molekula adsorbov\u00E1na jenom v ur\u010Dit\u00E9m rozsahu, co\u017E umo\u017E\u0148uje jej\u00ED dekompozici p\u0159\u00EDm\u00FDm atakem d\u00EDrou. Na druh\u00E9 stran\u011B, sekund\u00E1rn\u00ED oxida\u010Dn\u00ED specie jako radik\u00E1ly O2.-, HO2. a velmi pravd\u011Bpodobn\u011B i OH. hraj\u00ED kl\u00ED\u010Dovou roli v oxida\u010Dn\u00EDm mechanismu, co\u017E je zvl\u00E1\u0161t\u011B patrn\u00E9 v p\u0159\u00EDpad\u011B methyl\u010Derven\u011B. Vy\u0161\u0161\u00ED koncentrace adsorbovan\u00FDch l\u00E1tek, kter\u00E9 maj\u00ED b\u00FDt degradov\u00E1ny, m\u016F\u017Ee m\u00EDt dokonce i negativn\u00ED vliv, jak bylo zji\u0161t\u011Bno pro thionin jako modelovou slou\u010Deninu."@cs . "8"^^ . "CH - \u0160v\u00FDcarsk\u00E1 konfederace" . "mesoporous films; film thickness; TiO2; dye adsorption; photocatalytic degradation"@en . . . "Mesoporous films of TiO2 were prepared by a sol-gel procedure using a Pluronic (R) block copolymer and the dip-coating technique. The film thickness was controlled by changing the film withdrawal rate and by repetitive coatings. The amount of dye molecules adsorbed onto the mesoporous film depends on the dye properties, with thionine and methylene blue being more strongly adsorbed than rhodamine B, methyl orange and methyl red. The photocatalytic efficiency of the degradation of these dyes strongly depends on their respective degradation mechanism. It was found that the optimum efficiency is achieved when the target molecule is adsorbed only to some extent thus enabling its decomposition directly by the attack of holes. On the other hand, secondary oxidizing species such as O-2(center dot-) and HO2 center dot but most likely even OH center dot play a crucial role in the oxidation mechanism, which is particularly evident in the case of methylene red."@en . "4"^^ . "RIV/61388955:_____/08:00309564!RIV09-AV0-61388955" . . "Bahnemann, D." . . . . "2-3" . . . "A comparative study into the photocatalytic properties of thin mesoporous layers of TiO2 with controlled mesoporosity"@en . "Journal of Photochemistry and Photobiology A-Chemistry" . "1"^^ . . . "RIV/61388955:_____/08:00309564" .