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Degradation of organic pollutants in aquatic environment photoinduced by Fe(III)Cit complex: Impact of TiO2
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SYSNO ASEP 0359748 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Degradation of organic pollutants in aquatic environment photoinduced by Fe(III)Cit complex: Impact of TiO2 Tvůrce(i) Kolář, Michal (UFCH-W)
Jirkovský, Jaromír (UFCH-W) RID
Mailhot, G. (FR)
Bolte, M. (FR)
Krýsa, J. (CZ)Zdroj.dok. Catalysis Today. - : Elsevier - ISSN 0920-5861
Roč. 161, č. 1 (2011), s. 127-132Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova ferric citrate ; TiO2 ; monuron Vědní obor RIV CG - Elektrochemie CEP 1M0577 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000287730900023 DOI 10.1016/j.cattod.2010.12.004 Anotace Kinetics of photoinduced degradation of monuron (N-(4-chlorophenyl)-N',N'-dimethylurea) in three different photocatalytic systems (Fe(III)Cit, TiO2, combined system Fe(III)Cit + TiO2) 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 TiO2 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. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2012
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