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Photodegradation of ethyl paraben using simulated solar radiation and Ag3PO4 photocatalyst

Frontistis Zacharias, Antonopoulou Maria, Petala Athanasia, Venieri Danai, Konstantinou, Ioannis K, Kondarides Dimitris I., Mantzavinos, Dionissios

Απλή Εγγραφή

URIhttp://purl.tuc.gr/dl/dias/DABAC509-2B8C-43D5-901A-D60F14ADBE9E-
Αναγνωριστικόhttps://www.sciencedirect.com/science/article/pii/S0304389416303582?via%3Dihub-
Αναγνωριστικόhttps://doi.org/10.1016/j.jhazmat.2016.04.017-
Γλώσσαen-
Μέγεθος11 pagesen
ΤίτλοςPhotodegradation of ethyl paraben using simulated solar radiation and Ag3PO4 photocatalysten
ΔημιουργόςFrontistis Zachariasen
ΔημιουργόςAntonopoulou Mariaen
ΔημιουργόςPetala Athanasiaen
ΔημιουργόςVenieri Danaien
ΔημιουργόςΒενιερη Δαναηel
ΔημιουργόςKonstantinou, Ioannis Ken
ΔημιουργόςKondarides Dimitris I.en
ΔημιουργόςMantzavinos, Dionissiosen
ΕκδότηςElsevieren
ΠερίληψηIn 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
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2018-05-29-
Ημερομηνία Δημοσίευσης2017-
Θεματική ΚατηγορίαDesign of experimentsen
Θεματική ΚατηγορίαEndocrine disruptorsen
Θεματική ΚατηγορίαReaction pathwaysen
Θεματική ΚατηγορίαVisible lighten
Θεματική ΚατηγορίαWateren
Βιβλιογραφική ΑναφοράZ. 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.2016.04.017en

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