Degradation of organic pollutants in aquatic environment photoinduced by Fe(III)Cit complex: Impact of TiO(2)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F11%3A43892529" target="_blank" >RIV/60461373:22310/11:43892529 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/11:00359748

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.cattod.2010.12.004" target="_blank" >http://dx.doi.org/10.1016/j.cattod.2010.12.004</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cattod.2010.12.004" target="_blank" >10.1016/j.cattod.2010.12.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Degradation of organic pollutants in aquatic environment photoinduced by Fe(III)Cit complex: Impact of TiO(2)

Popis výsledku v původním jazyce

Kinetics of photoinduced degradation of monuron (N-(4-chlorophenyl)-N',N'-dimethylurea) in three different photocatalytic systems (Fe(III)Cit, TiO(2), combined system Fe(III)Cit + TiO(2)) were studied and compared. Principal importance of pH on the efficiency of the systems containing ferric citrate was found (optimal pH near 3). Positive effect of TiO(2) addition (24 mg L(-1)) to Fe(III)Cit (2.55 x 10(-4) mol L(-1)) was observed at the optimal pH. This effect was emphasized with tenfold lower concentration of Fe(III) Cit (2.55 x 10(-5) mol L(-1)). On the contrary, the reaction was practically inhibited close to neutral pH. At acid pH, more active species of both Fe(III) Cit and Fe(III) aquacomplexes are present. During photolysis of the Fe(III) Cit complex, a proton is consumed, restoring hydroxyl group; if the pH approaches the neutral zone, the Fe(III) tends to form aggregates, which are far less photoactive. In presence of TiO(2), Fe(III) is reduced by conduction band electrons of

Název v anglickém jazyce

Degradation of organic pollutants in aquatic environment photoinduced by Fe(III)Cit complex: Impact of TiO(2)

Popis výsledku anglicky

Kinetics of photoinduced degradation of monuron (N-(4-chlorophenyl)-N',N'-dimethylurea) in three different photocatalytic systems (Fe(III)Cit, TiO(2), combined system Fe(III)Cit + TiO(2)) were studied and compared. Principal importance of pH on the efficiency of the systems containing ferric citrate was found (optimal pH near 3). Positive effect of TiO(2) addition (24 mg L(-1)) to Fe(III)Cit (2.55 x 10(-4) mol L(-1)) was observed at the optimal pH. This effect was emphasized with tenfold lower concentration of Fe(III) Cit (2.55 x 10(-5) mol L(-1)). On the contrary, the reaction was practically inhibited close to neutral pH. At acid pH, more active species of both Fe(III) Cit and Fe(III) aquacomplexes are present. During photolysis of the Fe(III) Cit complex, a proton is consumed, restoring hydroxyl group; if the pH approaches the neutral zone, the Fe(III) tends to form aggregates, which are far less photoactive. In presence of TiO(2), Fe(III) is reduced by conduction band electrons of

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/1M0577" target="_blank" >1M0577: Výzkumné centrum pro nanopovrchové inženýrství</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Catalysis Today

ISSN

0920-5861

e-ISSN

—

Svazek periodika

161

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

127-132

Kód UT WoS článku

000287730900023

EID výsledku v databázi Scopus

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