Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
EN
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| URI | http://purl.tuc.gr/dl/dias/DABAC509-2B8C-43D5-901A-D60F14ADBE9E | - |
| Αναγνωριστικό | https://www.sciencedirect.com/science/article/pii/S0304389416303582?via%3Dihub | - |
| Αναγνωριστικό | https://doi.org/10.1016/j.jhazmat.2016.04.017 | - |
| Γλώσσα | en | - |
| Μέγεθος | 11 pages | en |
| Τίτλος | Photodegradation of ethyl paraben using simulated solar radiation and Ag3PO4 photocatalyst | en |
| Δημιουργός | Frontistis Zacharias | en |
| Δημιουργός | Antonopoulou Maria | en |
| Δημιουργός | Petala Athanasia | en |
| Δημιουργός | Venieri Danai | en |
| Δημιουργός | Βενιερη Δαναη | el |
| Δημιουργός | Konstantinou, Ioannis K | en |
| Δημιουργός | Kondarides Dimitris I. | en |
| Δημιουργός | Mantzavinos, Dionissios | en |
| Εκδότης | Elsevier | en |
| Περίληψη | In this work, the solar light-induced photocatalytic degradation of ethyl paraben (EP), a representative of the parabens family, was studied using silver orthophosphate, a relatively new photocatalytic material. The catalyst was synthesized by a precipitation method and had a primary crystallite size of ca 70 nm, specific surface area of 1.4 m2/g and a bandgap of 2.4 eV. A factorial design methodology was implemented to evaluate the importance of EP concentration (500–1500 μg/L), catalyst concentration (100–500 mg/L), reaction time (4–30 min), water matrix (pure water or 10 mg/L humic acid) and initial solution pH (3–9) on EP removal. All individual effects but solution pH were statistically significant and so were the second-order interactions of EP concentration with reaction time or catalyst concentration. The water matrix effect was negative (all other effects were positive) signifying the role of humic acid as scavenger of the oxidant species. Liquid chromatography-time of flight mass spectrometry revealed the formation of methyl paraben, 4-hydroxybenzoic acid, benzoic acid and phenol as primary transformation by-products; these are formed through dealkylation and decarboxylation reactions initiated primarily by the photogenerated holes. Estrogenicity assays showed that methyl paraben was more estrogenic than EP; however, parabens are slightly estrogenic compared to 17β-estradiol. | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2018-05-29 | - |
| Ημερομηνία Δημοσίευσης | 2017 | - |
| Θεματική Κατηγορία | Design of experiments | en |
| Θεματική Κατηγορία | Endocrine disruptors | en |
| Θεματική Κατηγορία | Reaction pathways | en |
| Θεματική Κατηγορία | Visible light | en |
| Θεματική Κατηγορία | Water | en |
| Βιβλιογραφική Αναφορά | Z. Frontistis, M. Antonopoulou, A. Petala, D. Venieri, I. Konstantinou, D. I. Kondarides and D. Mantzavinos, "Photodegradation of ethyl paraben using simulated solar radiation and Ag3PO4 photocatalyst," J. Hazard Mater., vol. 323, pt. 1, pp. 478-488, Feb. 2017. doi: 10.1016/j.jhazmat.2016.04.017 | en |
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