. "2"^^ . "Vrstvy p\u0159ipraven\u00E9 z pr\u00E1\u0161kov\u00E9ho oxidu titani\u010Dit\u00E9ho v sob\u011B kombinuj\u00ED dv\u011B v\u00FDhody heterogenn\u00ED katal\u00FDzy, a to vysok\u00FD specifick\u00FD povrch a imobilizaci fotokatalyz\u00E1toru. Pr\u00E1ce se zab\u00FDv\u00E1 p\u0159\u00EDpravou \u010D\u00E1sticov\u00FDch vrstev a stanoven\u00EDm jejich fotokatalytick\u00E9 aktivity. Pro p\u0159\u00EDpravu vrstev byly zvoleny t\u0159i r\u016Fzn\u00E9 pr\u00E1\u0161kov\u00E9 fotokatalyz\u00E1tory (P25 (Degussa), a anatas Ti1 a Ti2) a t\u0159i r\u016Fzn\u00E9 techniky p\u0159\u00EDpravy (sedimentace, elektrofor\u00E9za a dip-coating). Fotokatalytick\u00E1 aktivita p\u0159ipraven\u00FDch vrstev byla zji\u0161\u0165ov\u00E1na pomoc\u00ED fotokatalytick\u00E9 degradace modelov\u00E9 l\u00E1tky Oran\u017Ee II (2-hydroxy-1-naphtylazo benzensulfonan sodn\u00FD) ve vodn\u00E9m roztoku. Toto azo-barvivo m\u00E1 absorp\u010Dn\u00ED maximum ve viditeln\u00E9 oblasti spektra (485 nm) a minimum v oblasti 350 nm odpov\u00EDd\u00E1 oblasti maxim\u00E1ln\u00ED emise pou\u017Eit\u00E9ho zdroje UV z\u00E1\u0159en\u00ED. Tak je pouze mal\u00E1 \u010D\u00E1st z\u00E1\u0159en\u00ED pohlcena roztokem, p\u0159i\u010Dem\u017E v\u011Bt\u0161ina je vyu\u017Eita k iniciaci fotokatalytick\u00E9ho d\u011Bje. Fotokatalytick\u00E1 aktivita p\u0159ipraven\u00FDch vrstev byla srovn\u00E1na s fotokatalytickou aktivitou suspenz\u00ED jednotliv\u00FDch materi\u00E1l\u016F. V p"@cs . "Slovensk\u00E1 chemick\u00E1 spolo\u010Dnos\u0165 pri SAV" . . "RIV/60461373:22310/07:00018710" . "Kr\u00FDsa, Josef" . "Jirkovsk\u00FD, Jakub" . "Fotokatalytick\u00E1 degradace Oran\u017Ee II na \u010D\u00E1sticov\u00FDch vrstv\u00E1ch p\u0159ipraven\u00FDch z r\u016Fzn\u00FDch pr\u00E1\u0161kov\u00FDch fotokatalyz\u00E1tor\u016F" . "Photocatalytic degradation of Acid Orange 7 at particulate layers prepared from photocatalyst powders"@en . . . . . "422439" . "Photocatalysis; particulate layers; Acid Orange 7"@en . . "Fotokatalytick\u00E1 degradace Oran\u017Ee II na \u010D\u00E1sticov\u00FDch vrstv\u00E1ch p\u0159ipraven\u00FDch z r\u016Fzn\u00FDch pr\u00E1\u0161kov\u00FDch fotokatalyz\u00E1tor\u016F" . "[BE80FE914D93]" . "Vrstvy p\u0159ipraven\u00E9 z pr\u00E1\u0161kov\u00E9ho oxidu titani\u010Dit\u00E9ho v sob\u011B kombinuj\u00ED dv\u011B v\u00FDhody heterogenn\u00ED katal\u00FDzy, a to vysok\u00FD specifick\u00FD povrch a imobilizaci fotokatalyz\u00E1toru. Pr\u00E1ce se zab\u00FDv\u00E1 p\u0159\u00EDpravou \u010D\u00E1sticov\u00FDch vrstev a stanoven\u00EDm jejich fotokatalytick\u00E9 aktivity. Pro p\u0159\u00EDpravu vrstev byly zvoleny t\u0159i r\u016Fzn\u00E9 pr\u00E1\u0161kov\u00E9 fotokatalyz\u00E1tory (P25 (Degussa), a anatas Ti1 a Ti2) a t\u0159i r\u016Fzn\u00E9 techniky p\u0159\u00EDpravy (sedimentace, elektrofor\u00E9za a dip-coating). Fotokatalytick\u00E1 aktivita p\u0159ipraven\u00FDch vrstev byla zji\u0161\u0165ov\u00E1na pomoc\u00ED fotokatalytick\u00E9 degradace modelov\u00E9 l\u00E1tky Oran\u017Ee II (2-hydroxy-1-naphtylazo benzensulfonan sodn\u00FD) ve vodn\u00E9m roztoku. Toto azo-barvivo m\u00E1 absorp\u010Dn\u00ED maximum ve viditeln\u00E9 oblasti spektra (485 nm) a minimum v oblasti 350 nm odpov\u00EDd\u00E1 oblasti maxim\u00E1ln\u00ED emise pou\u017Eit\u00E9ho zdroje UV z\u00E1\u0159en\u00ED. Tak je pouze mal\u00E1 \u010D\u00E1st z\u00E1\u0159en\u00ED pohlcena roztokem, p\u0159i\u010Dem\u017E v\u011Bt\u0161ina je vyu\u017Eita k iniciaci fotokatalytick\u00E9ho d\u011Bje. Fotokatalytick\u00E1 aktivita p\u0159ipraven\u00FDch vrstev byla srovn\u00E1na s fotokatalytickou aktivitou suspenz\u00ED jednotliv\u00FDch materi\u00E1l\u016F. V p" . "Fotokatalytick\u00E1 degradace Oran\u017Ee II na \u010D\u00E1sticov\u00FDch vrstv\u00E1ch p\u0159ipraven\u00FDch z r\u016Fzn\u00FDch pr\u00E1\u0161kov\u00FDch fotokatalyz\u00E1tor\u016F"@cs . "22310" . "262-263" . . "RIV/60461373:22310/07:00018710!RIV08-MSM-22310___" . . . . "ChemZi" . "Fotokatalytick\u00E1 degradace Oran\u017Ee II na \u010D\u00E1sticov\u00FDch vrstv\u00E1ch p\u0159ipraven\u00FDch z r\u016Fzn\u00FDch pr\u00E1\u0161kov\u00FDch fotokatalyz\u00E1tor\u016F"@cs . . "1336-7242" . "P(1M0577)" . . "Zl\u00E1mal, Martin" . . . "Photocatalytic degradation of Acid Orange 7 at particulate layers prepared from photocatalyst powders"@en . "2"^^ . . "The present study deals with the preparation, characterization and photocatalytic properties of particulate TiO2 layers. Three various powder photocatalysts, namely P25 (Degussa) and anatase Tit 1 and Tit 2 of a Czech production, were used and three different techniques, i.e., spraying, electrophoresis and dip-coating, were applied. The prepared films were characterized by SEM, XRD and BET methods. At first the photoactivity of prepared particulate films was compared with the photoactivity of original powder photocatalysts in aqueous suspension. It is worth to note that the high surface area of Tit 2 photocatalyst was effectively utilised only after an ultrasonic pre-treatment that probably caused a breakage the particle agglomerates. It was found that the crucial parameter is the amount of deposited photocatalyst while the applied procedure of the layer deposition had practically no effect on the resulting photoactivity."@en . "3"^^ . "Bratislava" .