Solar Light Activation of Persulfate by TiO2 / Fe2O3 Layered Composite Films for Degradation of Amoxicillin: Degradation Mechanism, Matrix Effects, and Toxicity Assessments
dc.contributor.author
dc.date.accessioned
2022-02-22T12:04:52Z
dc.date.available
2022-02-22T12:04:52Z
dc.date.issued
2021-11-01
dc.identifier.uri
dc.description.abstract
In this study, sandwich-type composites made of commercial TiO2-P25 and α-Fe2O3 are obtained by spin coating thin films with different layer configurations, namely: i) TiO2 layer over α-Fe2O3 (TiO2@α-Fe2O3), ii) α-Fe2O3 layer over TiO2 (α-Fe2O3@TiO2), and iii) physically mixed 50% (w/w) of TiO2/Fe2O3. Photocatalytic activity under simulated solar irradiation of the aforementioned composites and their pure components is investigated for the degradation of amoxicillin (AMX) in the presence and absence of persulfate (PS). In both cases, TiO2@α-Fe2O3 sandwich-type achieve the highest degradation rates of AMX and a marked effect of PS addition on the AMX degradation rate is noted. The influence of pH and PS concentration on AMX degradation rate is established by means of experimental design and response surface modeling. The AMX degradation pathway is studied by means of reactive oxygen species scavenging and identification of intermediates by liquid chromatography with tandem mass spectrometry. Their evolution is directly correlated with an increased toxicity assessed by Daphnia magna and Vibrio fischeri assays. Furthermore, biodegradability changes are correlated with the mineralization profile of AMX solution. The influence of water matrix constituents (Cl−, CO32−, NO3−, PO43− and Suwannee river natural organic matter) on AMX degradation is established as well
dc.description.sponsorship
This paper is part of a project that has received funding from the
European Union’s Horizon 2020 – Research and Innovation Framework
Programme under the H2020 Marie Skłodowska-Curie Actions grant
agreement No. 812880
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application/pdf
dc.language.iso
eng
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Reproducció digital del document publicat a: https://doi.org/10.1002/adsu.202100119
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Advanced Sustainable Systems, 2021, vol. 5, núm. 11, p. 2100119
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Articles publicats (ICRA)
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Reconeixement 4.0 Internacional
dc.rights.uri
dc.source
Rosa, Francis M.de la Papac, Josipa Garcia Ballesteros, Sara Kovač, Marin Katančić, Zvonimir Ku ić, Hrvoje Lončarić Bo ić, Ana 2021 Solar Light Activation of Persulfate by TiO2 / Fe2O3 Layered Composite Films for Degradation of Amoxicillin: Degradation Mechanism, Matrix Effects, and Toxicity Assessments Advanced Sustainable Systems 5 11 2100119
dc.subject
dc.title
Solar Light Activation of Persulfate by TiO2 / Fe2O3 Layered Composite Films for Degradation of Amoxicillin: Degradation Mechanism, Matrix Effects, and Toxicity Assessments
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.relation.projectID
info:eu-repo/grantAgreement/EC/H2020/812880/EU/Joint PhD Laboratory for New Materials and Inventive Water Treatment Technologies. Harnessing resources effectively through innovation/NOWELTIES
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
034928
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dc.relation.FundingProgramme
dc.relation.ProjectAcronym
dc.identifier.eissn
2366-7486