Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant

One of the important environmental challenges of the 21st century is the effective removal of pollutants from the aquatic environment. In this study, electrodeposited manganese oxides (MnyOx) films were applied as visible-light-driven photocatalyst for the removal and mineralization of Tetracycline...

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Autores: Cestaro, Roberto, Philippe, Laetitia, Serrà i Ramos, Albert, Gómez, Elvira, Schmutz, Patrik
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/198845
Acceso en línea:https://hdl.handle.net/2445/198845
Access Level:acceso abierto
Palabra clave:Fotocatàlisi
Manganès
Antibiòtics
Photocatalysis
Manganese
Antibiotics
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spelling Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutantCestaro, RobertoPhilippe, LaetitiaSerrà i Ramos, AlbertGómez, ElviraSchmutz, PatrikFotocatàlisiManganèsAntibiòticsPhotocatalysisManganeseAntibioticsOne of the important environmental challenges of the 21st century is the effective removal of pollutants from the aquatic environment. In this study, electrodeposited manganese oxides (MnyOx) films were applied as visible-light-driven photocatalyst for the removal and mineralization of Tetracycline (TC) antibiotics. The photocatalytic activity of as-deposited and annealed MnyOx was tested at different pH values using LED visible illumination, resulting in 92.4 % of TC mineralization efficiency after 180 min for the best performing manganese oxide. Quenching experiments showed that hydroxyl radicals (radical dotOH) are the main active species responsible for the TC degradation. The photocorrosion of MnyOx has been studied by quantifying the concentration of the dissolved manganese cations during the photocatalytic experiments. By comparing the catalyst mass loss with the % of TC mineralization, we revealed that the degradation of the oxide surface structure is the factor that, more than the photocorrosion, is limiting the photocatalytic activity of MnyOx films. Finally, the photocatalytic mechanism of TC mineralization is proposed based on the detection of the intermediates species of the mineralization process by High-Performance Liquid Chromatography Mass-Spectroscopy. The facile synthesis process and the superior mineralization rate can open up a new approach for the possible large-scale utilization of electrodeposited MnyOx films as an effective visible light photocatalyst.Elsevier B.V.2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/198845Articles publicats en revistes (Ciència dels Materials i Química Física)reponame:Dipòsit Digital de la UBinstname:InglésReproducció del document publicat a: https://doi.org/10.1016/j.cej.2023.142202Chemical Engineering Journal, 2023, vol. 462, num. 142202https://doi.org/10.1016/j.cej.2023.142202cc-by-nc-nd (c) Cestaro, Roberto, et al., 2023https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1988452025-07-25T16:43:42Z
dc.title.none.fl_str_mv Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
title Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
spellingShingle Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
Cestaro, Roberto
Fotocatàlisi
Manganès
Antibiòtics
Photocatalysis
Manganese
Antibiotics
title_short Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
title_full Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
title_fullStr Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
title_full_unstemmed Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
title_sort Electrodeposited manganese oxides as efficient photocatalyst for the degradation of tetracycline antibiotics pollutant
dc.creator.none.fl_str_mv Cestaro, Roberto
Philippe, Laetitia
Serrà i Ramos, Albert
Gómez, Elvira
Schmutz, Patrik
author Cestaro, Roberto
author_facet Cestaro, Roberto
Philippe, Laetitia
Serrà i Ramos, Albert
Gómez, Elvira
Schmutz, Patrik
author_role author
author2 Philippe, Laetitia
Serrà i Ramos, Albert
Gómez, Elvira
Schmutz, Patrik
author2_role author
author
author
author
dc.subject.none.fl_str_mv Fotocatàlisi
Manganès
Antibiòtics
Photocatalysis
Manganese
Antibiotics
topic Fotocatàlisi
Manganès
Antibiòtics
Photocatalysis
Manganese
Antibiotics
description One of the important environmental challenges of the 21st century is the effective removal of pollutants from the aquatic environment. In this study, electrodeposited manganese oxides (MnyOx) films were applied as visible-light-driven photocatalyst for the removal and mineralization of Tetracycline (TC) antibiotics. The photocatalytic activity of as-deposited and annealed MnyOx was tested at different pH values using LED visible illumination, resulting in 92.4 % of TC mineralization efficiency after 180 min for the best performing manganese oxide. Quenching experiments showed that hydroxyl radicals (radical dotOH) are the main active species responsible for the TC degradation. The photocorrosion of MnyOx has been studied by quantifying the concentration of the dissolved manganese cations during the photocatalytic experiments. By comparing the catalyst mass loss with the % of TC mineralization, we revealed that the degradation of the oxide surface structure is the factor that, more than the photocorrosion, is limiting the photocatalytic activity of MnyOx films. Finally, the photocatalytic mechanism of TC mineralization is proposed based on the detection of the intermediates species of the mineralization process by High-Performance Liquid Chromatography Mass-Spectroscopy. The facile synthesis process and the superior mineralization rate can open up a new approach for the possible large-scale utilization of electrodeposited MnyOx films as an effective visible light photocatalyst.
publishDate 2023
dc.date.none.fl_str_mv 2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/198845
url https://hdl.handle.net/2445/198845
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1016/j.cej.2023.142202
Chemical Engineering Journal, 2023, vol. 462, num. 142202
https://doi.org/10.1016/j.cej.2023.142202
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Cestaro, Roberto, et al., 2023
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Cestaro, Roberto, et al., 2023
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Ciència dels Materials i Química Física)
reponame:Dipòsit Digital de la UB
instname:
instname_str
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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