145119 20260217205558.0 doi 10.3390/w16172434 sideral 139929 ART-2024-139929 eng Jojoa-Sierra, Sindy D. Universidad de Zaragoza Levofloxacin Degradation, Antimicrobial Activity Decrease, and Potential for Water Disinfection Using Peroxydisulfate Activation by Ag/TiO2 under Sunlight 2024 Access copy available to the general public Unrestricted Water quality and usability are global concerns due to microbial and chemical pollution resulting from anthropogenic activities. Therefore, strategies for eliminating contaminants are required. In this context, the removal and decrease in antibiotic activity (AA) associated with levofloxacin (LEV), using TiO2 and Ag/TiO2 catalysts, with and without sunlight and peroxydisulfate, was evaluated. Additionally, the disinfection capacity of catalytic systems was assessed. The catalysts were synthesized and characterized. Moreover, the effect of Ag doping on visible light absorption was determined. Then, the photocatalytic treatment of LEV in water was performed. The materials characterization and EPR analyses revealed that LEV degradation and AA decrease were ascribed to a combined action of solar light, sulfate radical, and photocatalytic activity of the TiO2-based materials. Also, the primary byproducts were elucidated using theoretical analyses (predictions about moieties on LEV more susceptible to being attacked by the degrading species) and experimental techniques (LC-MS), which evidenced transformations on the piperazyl ring, carboxylic acid, and cyclic ether on LEV. Moreover, the AA decrease was linked to the antibiotic transformations. In addition, the combined system (i.e., light/catalyst/peroxydisulfate) was shown to be effective for E. coli inactivation, indicating the versatility of this system for decontamination and disinfection. info:eu-repo/grantAgreement/ES/DGA/B43-23R info:eu-repo/grantAgreement/ES/MICINN-AEI/PRTR-C17.I1 info:eu-repo/grantAgreement/ES/MICINN/AEI/TED2021-129267B-I00 info:eu-repo/grantAgreement/ES/MICINN/PID2021-127287NB-I00 info:eu-repo/grantAgreement/ES/NextGenerationEU/PRTR info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 3.0 2024 WATER RESOURCES 47 / 132 = 0.356 2024 Q2 T2 ENVIRONMENTAL SCIENCES 192 / 376 = 0.511 2024 Q3 T2 0.752 2024 Aquatic Science 2024 Q1 Water Science and Technology 2024 Q1 Geography, Planning and Development 2024 Q1 Biochemistry 2024 Q2 6.0 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Jaramillo-Paez, Cesar Serna-Galvis, Efraím A. García-Rubio, Inés (orcid)0000-0002-1827-1250 Hidalgo, María C. Navío, José A. Ormad, María P. Universidad de Zaragoza (orcid)0000-0003-3014-0322 Torres-Palma, Ricardo A. Mosteo, Rosa Universidad de Zaragoza (orcid)0000-0002-7456-4912 5005 790 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Tecnologi. Medio Ambiente 16, 17 (2024), 2434 [17 pp.] Water (Basel) Water (Switzerland) 2073-4441 3276403 http://zaguan.unizar.es/record/145119/files/texto_completo.pdf Versión publicada 2648506 http://zaguan.unizar.es/record/145119/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:145119 articulos driver 2026-02-17-20:43:34 ARTICLE