"Praha" . "22310" . . "RIV/60461373:22310/11:43892466" . . "model compound; 4-CP; AO7; layers; TiO2; photocatalysys"@en . "Pou\u017Eit\u00ED modelov\u00FDch l\u00E1tek Acid Orange 7 a 4-chlorfenol pro stanovov\u00E1n\u00ED fotokatalytick\u00E9 aktivity aktivity vrstev TiO2" . . . "Vysok\u00E1 \u0161kola chemicko-technologick\u00E1 v Praze" . "3"^^ . "RIV/60461373:22310/11:43892466!RIV12-MSM-22310___" . . "3"^^ . . . "Pou\u017Eit\u00ED modelov\u00FDch l\u00E1tek Acid Orange 7 a 4-chlorfenol pro stanovov\u00E1n\u00ED fotokatalytick\u00E9 aktivity aktivity vrstev TiO2"@cs . "P(1M0577)" . "Kr\u00FDsa, Josef" . "[9224CD518BB4]" . "5. semin\u00E1\u0159 v\u00FDzkumn\u00E9ho centra NANOPIN" . . . . . . . . "5"^^ . "Pau\u0161ov\u00E1, \u0160\u00E1rka" . . . . "Pou\u017Eit\u00ED modelov\u00FDch l\u00E1tek Acid Orange 7 a 4-chlorfenol pro stanovov\u00E1n\u00ED fotokatalytick\u00E9 aktivity aktivity vrstev TiO2" . "The use of model compounds Acid Orange 7 and 4-chlorophenol photocatalytic activity for determining the activity of TiO2 layers"@en . "The use of model compounds Acid Orange 7 and 4-chlorophenol photocatalytic activity for determining the activity of TiO2 layers"@en . . "Introduction Photocatalytic activity of materials in the liquid phase is currently estimated using dozens of different model compounds. Among the available characters include chlorinated hydrocarbons (eg 4-chlorophenol, 2,4,6-trichlorophenol), various pesticides and herbicides (Monuron, Atrazine) and finally an organic dye (methylene blue, Acid Orange 7). Such a large number of model compounds, however, complicates the comparison of the results of photocatalytic activity of materials. Recently, more and more emerging requirements for the introduction of standard methods of measuring photocatalytic activity, which will be precisely defined in terms of model substances and used experimental design (type of reactor, the light source). The use of organic dyes has against other agents model a great advantage in ease of measurement of their concentration on the absorbance of light. Often mentioned disadvantage of dyes is their possible sensitization, mainly in the visible region. Sensitisation is a process in which there is absorption of light to excite the dye molecules [1]. This molecule is then excited and in the presence of a catalyst should oxidatively decompose. Effect of sensitization on the rate of photocatalytic degradation of dyes are often not properly described. One of the candidates for the standard model substance is Acid Orange 7 (AO7) [2]. This anionic azo dye is used to fotocatalytical experiments in many laboratories. Another frequently used substance is 4-chlorophenol (4-CP) [3]. It is a relatively simple chlorinated aromatic substance which is dangerous to the environment. The AO7 is not toxic but it is a major pollutant of wastewater from the textile industry."@en . "Pou\u017Eit\u00ED modelov\u00FDch l\u00E1tek Acid Orange 7 a 4-chlorfenol pro stanovov\u00E1n\u00ED fotokatalytick\u00E9 aktivity aktivity vrstev TiO2"@cs . . "\u00DAvod Fotokatalytick\u00E1 aktivita materi\u00E1l\u016F v kapaln\u00E9 f\u00E1zi se v sou\u010Dasn\u00E9 dob\u011B stanovuje pomoc\u00ED des\u00EDtek r\u016Fzn\u00FDch modelov\u00FDch l\u00E1tek. Mezi nejpou\u017E\u00EDvan\u011Bj\u0161\u00ED pat\u0159\u00ED chlorovan\u00E9 uhlovod\u00EDky (nap\u0159. 4 chlorfenol, 2,4,6 trichlorfenol), nejr\u016Fzn\u011Bj\u0161\u00ED pesticidy a herbicidy (Monuron, Atrazin) a v neposledn\u00ED \u0159ad\u011B organick\u00E1 barviva (methylenov\u00E1 mod\u0159, Acid Orange 7). Takov\u00E9to velk\u00E9 mno\u017Estv\u00ED modelov\u00FDch l\u00E1tek v\u0161ak komplikuje srovn\u00E1v\u00E1n\u00ED v\u00FDsledk\u016F fotokatalytick\u00E9 aktivity jednotliv\u00FDch materi\u00E1l\u016F. V posledn\u00ED dob\u011B se \u010D\u00EDm d\u00E1l v\u00EDce objevuj\u00ED po\u017Eadavky na zaveden\u00ED standardn\u00ED metody m\u011B\u0159en\u00ED fotokatalytick\u00E9 aktivity, kter\u00E1 bude p\u0159esn\u011B definov\u00E1na nejen z pohledu pou\u017Eit\u00E9 modelov\u00E9 l\u00E1tky, ale i experiment\u00E1ln\u00EDho uspo\u0159\u00E1d\u00E1n\u00ED (typ reaktoru, zdroj sv\u011Btla). Pou\u017E\u00EDv\u00E1n\u00ED organick\u00FDch barviv m\u00E1 proti ostatn\u00EDm modelov\u00FDm l\u00E1tk\u00E1m velkou v\u00FDhodu ve snadnosti m\u011B\u0159en\u00ED jejich koncentrace na z\u00E1klad\u011B jejich absorbance sv\u011Btla. \u010Casto zmi\u0148ovanou nev\u00FDhodou barviv je v\u0161ak jejich mo\u017En\u00E1 senzitizace a to p\u0159ev\u00E1\u017En\u011B ve viditeln\u00E9 oblasti. Senzitizace je proces, p\u0159i kter\u00E9m doch\u00E1z\u00ED absorpc\u00ED sv\u011Btla k excitaci molekuly barviva [1]. Takto vybuzen\u00E1 molekula se pak v p\u0159\u00EDtomnosti katalyz\u00E1toru m\u016F\u017Ee oxidativn\u011B rozkl\u00E1dat. Vliv senzitizace na rychlost fotokatalytick\u00E9 degradace barviv v\u0161ak \u010Dasto nen\u00ED \u0159\u00E1dn\u011B pops\u00E1na. Jedn\u00EDm z kandid\u00E1t\u016F na standardn\u00ED modelovou l\u00E1tku je Acid Orange 7 (AO7) [2]. Toto aniontov\u00E9 azobarvivo se pou\u017E\u00EDv\u00E1 k fotokatalytick\u00FDm experiment\u016Fm v mnoha laborato\u0159\u00EDch. Dal\u0161\u00ED \u010Dasto pou\u017E\u00EDvanou l\u00E1tkou je 4-chlorfenol (4-CP) [3]. Jedn\u00E1 se o pom\u011Brn\u011B jednoduchou chlorovanou aromatickou l\u00E1tku, kter\u00E1 je nebezpe\u010Dn\u00E1 \u017Eivotn\u00EDmu prost\u0159ed\u00ED. L\u00E1tka AO7 nen\u00ED toxick\u00E1 av\u0161ak je v\u00FDznamn\u00FDm polutantem odpadn\u00EDch vod z textiln\u00EDho pr\u016Fmyslu." . . "222117" . "2011-06-20+02:00"^^ . "Hnanice" . . "\u00DAvod Fotokatalytick\u00E1 aktivita materi\u00E1l\u016F v kapaln\u00E9 f\u00E1zi se v sou\u010Dasn\u00E9 dob\u011B stanovuje pomoc\u00ED des\u00EDtek r\u016Fzn\u00FDch modelov\u00FDch l\u00E1tek. Mezi nejpou\u017E\u00EDvan\u011Bj\u0161\u00ED pat\u0159\u00ED chlorovan\u00E9 uhlovod\u00EDky (nap\u0159. 4 chlorfenol, 2,4,6 trichlorfenol), nejr\u016Fzn\u011Bj\u0161\u00ED pesticidy a herbicidy (Monuron, Atrazin) a v neposledn\u00ED \u0159ad\u011B organick\u00E1 barviva (methylenov\u00E1 mod\u0159, Acid Orange 7). Takov\u00E9to velk\u00E9 mno\u017Estv\u00ED modelov\u00FDch l\u00E1tek v\u0161ak komplikuje srovn\u00E1v\u00E1n\u00ED v\u00FDsledk\u016F fotokatalytick\u00E9 aktivity jednotliv\u00FDch materi\u00E1l\u016F. V posledn\u00ED dob\u011B se \u010D\u00EDm d\u00E1l v\u00EDce objevuj\u00ED po\u017Eadavky na zaveden\u00ED standardn\u00ED metody m\u011B\u0159en\u00ED fotokatalytick\u00E9 aktivity, kter\u00E1 bude p\u0159esn\u011B definov\u00E1na nejen z pohledu pou\u017Eit\u00E9 modelov\u00E9 l\u00E1tky, ale i experiment\u00E1ln\u00EDho uspo\u0159\u00E1d\u00E1n\u00ED (typ reaktoru, zdroj sv\u011Btla). Pou\u017E\u00EDv\u00E1n\u00ED organick\u00FDch barviv m\u00E1 proti ostatn\u00EDm modelov\u00FDm l\u00E1tk\u00E1m velkou v\u00FDhodu ve snadnosti m\u011B\u0159en\u00ED jejich koncentrace na z\u00E1klad\u011B jejich absorbance sv\u011Btla. \u010Casto zmi\u0148ovanou nev\u00FDhodou barviv je v\u0161ak jejich mo\u017En\u00E1 senzitizace a to p\u0159ev\u00E1\u017En\u011B ve viditeln\u00E9 oblasti. Senzitizace je proces, p\u0159i kter\u00E9m doch\u00E1z\u00ED absorpc\u00ED sv\u011Btla k excitaci molekuly barviva [1]. Takto vybuzen\u00E1 molekula se pak v p\u0159\u00EDtomnosti katalyz\u00E1toru m\u016F\u017Ee oxidativn\u011B rozkl\u00E1dat. Vliv senzitizace na rychlost fotokatalytick\u00E9 degradace barviv v\u0161ak \u010Dasto nen\u00ED \u0159\u00E1dn\u011B pops\u00E1na. Jedn\u00EDm z kandid\u00E1t\u016F na standardn\u00ED modelovou l\u00E1tku je Acid Orange 7 (AO7) [2]. Toto aniontov\u00E9 azobarvivo se pou\u017E\u00EDv\u00E1 k fotokatalytick\u00FDm experiment\u016Fm v mnoha laborato\u0159\u00EDch. Dal\u0161\u00ED \u010Dasto pou\u017E\u00EDvanou l\u00E1tkou je 4-chlorfenol (4-CP) [3]. Jedn\u00E1 se o pom\u011Brn\u011B jednoduchou chlorovanou aromatickou l\u00E1tku, kter\u00E1 je nebezpe\u010Dn\u00E1 \u017Eivotn\u00EDmu prost\u0159ed\u00ED. L\u00E1tka AO7 nen\u00ED toxick\u00E1 av\u0161ak je v\u00FDznamn\u00FDm polutantem odpadn\u00EDch vod z textiln\u00EDho pr\u016Fmyslu."@cs . . "978-80-7080-780-4" . "Zl\u00E1mal, Martin" .