Photocatalytic transformation of the antipsychotic drug risperidone in aqueous media on reduced graphene oxide—TiO2 composites
Φόρτωση...
Ημερομηνία
Συγγραφείς
Albanis, Triantafyllos
Sakkas, Vasilios
Minero, Claudio
Medana, Claudio
Hadjicostas, C.
Calza, Paola
SARRO, MARCO
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Applied Catalysis B: Environmental
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
In the present study reduced graphene oxide—TiO2 composites were synthesized at two different ratios
(1:10 and 1:5) through a hydrothermal method using graphene oxide and commercial P25 as start ing materials. Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray
diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), BET surface area and ultraviolet–visible
(UV–vis) absorption spectroscopy were employed to investigate the morphology and properties of the
produced composites. The photocatalytic performance of TiO2–rGO catalysts was evaluated under artifi cial solar light and visible light in distilled water, as well as, different surface waters (at natural pH) with
respect to risperidone (antipsychotic drug) degradation. Irrespectively of the irradiated aqueous matrix,
the photocatalytic efficiency of the tested composite materials under simulated solar light and visible
light irradiation was higher compared to bare TiO2–P25 (reference catalyst).
The identification of intermediate compounds, the assessment of mineralization and the evaluation
of toxicity were performed as well. LC/HRMS was brought to bear in assessing the temporal course of
the photocatalyzed process.Along with risperidone decomposition,the formation oftwenty intermediate
compounds (TPs) occurred in the presence of TiO2. Irradiation of risperidone in the presence ofthe hybrid
material resulted in the identification of thirty-four TPs. The transformation of risperidone progressed
through the formation of compounds more harmful than the drug itself, as assessed by the measurement
of acute toxicity, evaluated using the Vibrio fischeri bacteria test. When employing TiO2–rGO, all the
identified transformation products were quicker degraded compared to TiO2–P25. At the same time both
the reduction of toxicity and mineralization were faster achieved than with bare TiO2–P25.
Περιγραφή
Λέξεις-κλειδιά
Photocatalysis, Reduced graphene oxide, Risperidone
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Τμήμα Χημείας
Πίνακας περιεχομένων
Χορηγός
Βιβλιογραφική αναφορά
Περιλαμβάνει βιβλιογραφικές αναφορές
Ονόματα συντελεστών
Αριθμός σελίδων
Λεπτομέρειες μαθήματος
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item.page.review
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Άδεια Creative Commons
Άδεια χρήσης της εγγραφής: Attribution-NonCommercial-NoDerivs 3.0 United States