title: Solar-driven photocatalytic treatment of diclofenac using immobilized TiO2-based zeolite composites.
abstract: The study is aimed at evaluating the potential of immobilized TiO2-based zeolite composite for solar-driven photocatalytic water treatment. In that purpose, TiO2-iron-exchanged zeolite (FeZ) composite was prepared using commercial Aeroxide TiO2 P25 and iron-exchanged zeolite of ZSM5 type, FeZ. The activity of TiO2-FeZ, immobilized on glass support, was evaluated under solar irradiation for removal of diclofenac (DCF) in water. TiO2-FeZ immobilized in a form of thin film was characterized for its morphology, structure, and composition using scanning electron microscopy/energy-dispersive x-ray spectroscopy (SEM/EDX). Diffuse reflectance spectroscopy (DRS) was used to determine potential changes in band gaps of prepared TiO2-FeZ in comparison to pure TiO2. The influence of pH, concentration of hydrogen peroxide, FeZ wt% within the composite, and photocatalyst dosage on DCF removal and conversion efficiency by solar/TiO2-FeZ/H2O2 process was investigated. TiO2-FeZ demonstrated higher photocatalytic activity than pure TiO2 under solar irradiation in acidic conditions and presence of H2O2.
authors.affiliation: Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR-10000, Zagreb, Croatia.
authors.forename: Marin
authors.initials: M
authors.lastname: Kovacic
authors.affiliation: Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR-10000, Zagreb, Croatia.
authors.forename: Subhan
authors.initials: S
authors.lastname: Salaeh
authors.affiliation: Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR-10000, Zagreb, Croatia. hkusic@fkit.hr.
authors.forename: Hrvoje
authors.initials: H
authors.lastname: Kusic
authors.affiliation: Laboratory for Environmental Research, University of Nova Gorica, Vipavska 13, SI-5000, Nova Gorica, Slovenia.|Laboratory for Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, SI-1001, Ljubljana, Slovenia.
authors.forename: Andraz
authors.initials: A
authors.lastname: Suligoj
authors.affiliation: Laboratory for Environmental Research, University of Nova Gorica, Vipavska 13, SI-5000, Nova Gorica, Slovenia.
authors.forename: Marko
authors.initials: M
authors.lastname: Kete
authors.affiliation: Materials Research Laboratory, University of Nova Gorica, Vipavska 11c, SI-5270, Ajdovscina, Slovenia.
authors.forename: Mattia
authors.initials: M
authors.lastname: Fanetti
authors.affiliation: Laboratory for Environmental Research, University of Nova Gorica, Vipavska 13, SI-5000, Nova Gorica, Slovenia.
authors.forename: Urska Lavrencic
authors.initials: UL
authors.lastname: Stangar
authors.affiliation: Environmental Engineering and Science Program, University of Cincinnati, Cincinnati, OH, 45221-0012, USA.
authors.forename: Dionysios D
authors.initials: DD
authors.lastname: Dionysiou
authors.affiliation: Faculty of Chemical Engineering and Technology, University of Zagreb, Marulicev trg 19, HR-10000, Zagreb, Croatia. abozic@fkit.hr.
authors.forename: Ana Loncaric
authors.initials: AL
authors.lastname: Bozic
mesh_terms: D002384:Catalysis; D004008:Diclofenac / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D055668:Photochemical Processes; D013052:Spectrometry, X-Ray Emission; D013472:Sunlight; D014025:Titanium / Q000737:chemistry*; D014867:Water / Q000737:chemistry; D018508:Water Purification / Q000379:methods; D017641:Zeolites / Q000737:chemistry*
chemical_list: D014867:Water; D017641:Zeolites; D004008:Diclofenac; C009495:titanium dioxide; D006861:Hydrogen Peroxide; D014025:Titanium; D007501:Iron
keywords: Diclofenac; Photocatalysis; Solar irradiation; Thin films; TiO2-FeZ; Water treatment