Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions

This work investigates the applicability of a new Ti/MMO/ZnO electrode composed to metallic mixture oxides of ruthenium and titanium (MMO) and zinc oxide electrodeposited in the photoelectrocatalytic treatment of synthetic wastes polluted with the antibiotic levofloxacin (LFX) and chlorine anions. T...

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Detalles Bibliográficos
Autores: Goulart, Lorena Athie, Moratalla, Ángela, Lanza, Marcos Roberto de Vasconcelos, Sáez Jiménez, Cristina, Rodrigo Rodrigo, Manuel Andrés
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/29153
Acceso en línea:http://hdl.handle.net/10578/29153
Access Level:acceso abierto
Palabra clave:Electrólisis
Ingeniería química
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spelling Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anionsGoulart, Lorena AthieMoratalla, ÁngelaLanza, Marcos Roberto de VasconcelosSáez Jiménez, CristinaRodrigo Rodrigo, Manuel AndrésElectrólisisIngeniería químicaThis work investigates the applicability of a new Ti/MMO/ZnO electrode composed to metallic mixture oxides of ruthenium and titanium (MMO) and zinc oxide electrodeposited in the photoelectrocatalytic treatment of synthetic wastes polluted with the antibiotic levofloxacin (LFX) and chlorine anions. This work try to shed light, at a low Technology Readiness Level (TRL), of the mechanisms which may be involved in the degradation of antibiotics in real wastes containing high concentrations of chlorides, such as urine, in the absence of other disturbing inputs. Results show that the degradation efficiency depended on the pH of the waste and a more pronounced synergistic effect between Ti/MMO/ZnO and UVC light was obtained at acidic and neutral pH, leading to higher rates of antibiotic removal with the subsequent formation of inorganic ions NH4+ and NO3−. The large formation of hydroxyl radicals from the photo-generated charges in Ti/MMO/ZnO, and the reactive chlorine species produced from the homolysis of hypochlorous acid/hypochlorite, are used to explain the oxidation mechanism. In addition, results indicate that Ti/MMO/ZnO is an excellent photocatalyst for the degradation under acidic conditions in wastes containing chloride anions of persistent pollutants at relatively low concentrations.Elsevier202120212021info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10578/29153reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/291532026-05-27T07:36:41Z
dc.title.none.fl_str_mv Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
title Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
spellingShingle Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
Goulart, Lorena Athie
Electrólisis
Ingeniería química
title_short Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
title_full Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
title_fullStr Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
title_full_unstemmed Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
title_sort Photocatalytic performance of Ti/MMO/ZnO at degradation of levofloxacin: Effect of pH and chloride anions
dc.creator.none.fl_str_mv Goulart, Lorena Athie
Moratalla, Ángela
Lanza, Marcos Roberto de Vasconcelos
Sáez Jiménez, Cristina
Rodrigo Rodrigo, Manuel Andrés
author Goulart, Lorena Athie
author_facet Goulart, Lorena Athie
Moratalla, Ángela
Lanza, Marcos Roberto de Vasconcelos
Sáez Jiménez, Cristina
Rodrigo Rodrigo, Manuel Andrés
author_role author
author2 Moratalla, Ángela
Lanza, Marcos Roberto de Vasconcelos
Sáez Jiménez, Cristina
Rodrigo Rodrigo, Manuel Andrés
author2_role author
author
author
author
dc.subject.none.fl_str_mv Electrólisis
Ingeniería química
topic Electrólisis
Ingeniería química
description This work investigates the applicability of a new Ti/MMO/ZnO electrode composed to metallic mixture oxides of ruthenium and titanium (MMO) and zinc oxide electrodeposited in the photoelectrocatalytic treatment of synthetic wastes polluted with the antibiotic levofloxacin (LFX) and chlorine anions. This work try to shed light, at a low Technology Readiness Level (TRL), of the mechanisms which may be involved in the degradation of antibiotics in real wastes containing high concentrations of chlorides, such as urine, in the absence of other disturbing inputs. Results show that the degradation efficiency depended on the pH of the waste and a more pronounced synergistic effect between Ti/MMO/ZnO and UVC light was obtained at acidic and neutral pH, leading to higher rates of antibiotic removal with the subsequent formation of inorganic ions NH4+ and NO3−. The large formation of hydroxyl radicals from the photo-generated charges in Ti/MMO/ZnO, and the reactive chlorine species produced from the homolysis of hypochlorous acid/hypochlorite, are used to explain the oxidation mechanism. In addition, results indicate that Ti/MMO/ZnO is an excellent photocatalyst for the degradation under acidic conditions in wastes containing chloride anions of persistent pollutants at relatively low concentrations.
publishDate 2021
dc.date.none.fl_str_mv 2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10578/29153
url http://hdl.handle.net/10578/29153
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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