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  5. Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά). ΧΗΜ
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Please use this identifier to cite or link to this item: https://olympias.lib.uoi.gr/jspui/handle/123456789/8448
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dc.contributor.authorSakkas, V. A.en
dc.contributor.authorArabatzis, I. M.en
dc.contributor.authorKonstantinou, I. K.en
dc.contributor.authorDimou, A. D.en
dc.contributor.authorAlbanis, T. A.en
dc.contributor.authorFalaras, P.en
dc.date.accessioned2015-11-24T16:41:38Z-
dc.date.available2015-11-24T16:41:38Z-
dc.identifier.issn0926-3373-
dc.identifier.urihttps://olympias.lib.uoi.gr/jspui/handle/123456789/8448-
dc.rightsDefault Licence-
dc.subjectphotocatalysisen
dc.subjecttio2en
dc.subjectfilmsen
dc.subjectmetolachloren
dc.subjectsilver modificationen
dc.subjectsurface propertiesen
dc.subjecttoxicityen
dc.subjectvibrio fischerien
dc.subjectsolid-phase extractionen
dc.subjectherbicide metolachloren
dc.subjectsolar lighten
dc.subjectthin-filmsen
dc.subjectwateren
dc.subjectphotodegradationen
dc.subjectproductsen
dc.subjectalachloren
dc.subjectsuspensionsen
dc.subjectmetabolismen
dc.titleMetolachlor photocatalytic degradation using TiO2 photocatalystsen
heal.typejournalArticle-
heal.type.enJournal articleen
heal.type.elΆρθρο Περιοδικούel
heal.identifier.primaryDOI 10.1016/j.apcatb.2003.12.008-
heal.identifier.secondary<Go to ISI>://000220939900006-
heal.identifier.secondaryhttp://ac.els-cdn.com/S0926337303005782/1-s2.0-S0926337303005782-main.pdf?_tid=a174bc9b7c360474823ae73428c5ec24&acdnat=1333023371_ec79ea90f792c486afddaf533e484dfb-
heal.languageen-
heal.accesscampus-
heal.recordProviderΠανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείαςel
heal.publicationDate2004-
heal.abstractThe photocatalytic degradation of the herbicide metolachlor is Studied, using TiO2 photocatalysts. Apart from the titania aqueous dispersions, immobilized semiconductor thin films were used in order to evaluate their effectiveness. The films exhibit a rough, nanocrystalline configuration, ideal for heterogeneous processes. Additionally the thin films were silver modified to determine if noble metal nanoclusters affect the photocatalytic efficiency. The kinetics obtained demonstrated that powder Titania (t(1/2) = 21 min) was more efficient for the photocatalytic decomposition of metolachlor compared to pure titania thin film catalysts (t(1/2) = 52 min), while the presence of silver ions in TiO2 particles modification did not prove to promote the solar photocatalytic process. Intermediate products from the slurry system were isolated and identified by means of solid-phase extraction (SPE) coupled to gas chromatography-mass spectroscopy techniques (GC-MS). A proposed degradation pathway of metolachlor is presented, involving mainly hydroxylation and dealkylation reactions. In addition, toxicity studies based on the luminescence of the bacteria Vibrio fischeri before and after the photocatalytic treatment were performed. The results demonstrated that the transient intermediates formed were more toxic compared to parent compound. At low photocatalyst loads, the toxicity of the irradiated solution remains relatively high even though 88% of metolachlor is decomposed. (C) 2003 Elsevier B.V. All rights reserved.en
heal.publisherElsevieren
heal.journalNameApplied Catalysis B-Environmentalen
heal.journalTypepeer reviewed-
heal.fullTextAvailabilityTRUE-
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