Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH

Natural zeolites can be used to obtain effective catalysts for heterogeneous photocatalytic reactions due to their low cost and favorable physicochemical properties for water treatment. In this work, a natural clinoptilolite is modified by incorporating iron (NZ–Fe) and copper (NZ–Cu) as compensatio...

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Autores: Prieto Laria, Paula, Fernández-Ibáñez, Pilar, Ruiz-Salvador, A. Rabdel, Canosa Pérez-Fragero, Inés, Flores, Amando, Salameh, Carlos, Domínguez-Santos, José Enrique, Ofelia Núñez, Nuria, Ballesteros, María de la Menta, Farías, Tania
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Universidad Pablo de Olavide (UPO)
Repositorio:RIO. Repositorio Institucional Olavide
Idioma:inglés
OAI Identifier:oai:rio.upo.es:10433/24741
Acesso em linha:https://hdl.handle.net/10433/24741
Access Level:acceso abierto
Palavra-chave:Natural zeolite
Iron and copper exchange
Heterogeneous photo-Fenton
Visible light
E. coli
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spelling Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pHPrieto Laria, PaulaFernández-Ibáñez, PilarRuiz-Salvador, A. RabdelCanosa Pérez-Fragero, InésFlores, AmandoSalameh, CarlosDomínguez-Santos, José EnriqueOfelia Núñez, NuriaBallesteros, María de la MentaFarías, TaniaNatural zeoliteIron and copper exchangeHeterogeneous photo-FentonVisible lightE. coliNatural zeolites can be used to obtain effective catalysts for heterogeneous photocatalytic reactions due to their low cost and favorable physicochemical properties for water treatment. In this work, a natural clinoptilolite is modified by incorporating iron (NZ–Fe) and copper (NZ–Cu) as compensation cations through ion exchange processes. Metals incorporation and structural stability are demonstrated through X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. DR-UV–Vis measurements are used to estimate the bandgap and predict the photocatalytic performance of both materials. Their effectiviness in heterogeneous photocatalytic systems is confirmed by evaluating the inactivation of E. coli as a model pathogen in water. The bacterial detection limit (initial ≈106 CFU/mL) is reached using 1 gL−1 of both catalysts, 100 ppm of H2O2 under visible light (410–710 nm) and near neutral pH in 2 h, with no post-treatment regrowth observed. Experimental data are analyzed according to the Chick–Watson, Weibull, and Hom disinfection kinetic models. Although more hydroxyl radicals are generated (trapping tests) and less iron leachate is observed for NZ–Fe, good reusability is attained for three disinfection cycles when NZ–Cu is used. This makes copper-exchanged clinoptilolite a suitable and low-cost photocatalyst for water disinfection through heterogeneous photo-Fenton-type processes.Chemistry Europe20252025-09-2220252025-09-1820252025-09-18journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10433/24741reponame:RIO. Repositorio Institucional Olavideinstname:Universidad Pablo de Olavide (UPO)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:rio.upo.es:10433/247412026-06-13T12:46:27Z
dc.title.none.fl_str_mv Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
title Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
spellingShingle Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
Prieto Laria, Paula
Natural zeolite
Iron and copper exchange
Heterogeneous photo-Fenton
Visible light
E. coli
title_short Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
title_full Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
title_fullStr Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
title_full_unstemmed Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
title_sort Cu or Fe-Exchanged Natural Clinoptilolite as Sustainable Light-Assisted Catalyst for Water Disinfection at Near Neutral pH
dc.creator.none.fl_str_mv Prieto Laria, Paula
Fernández-Ibáñez, Pilar
Ruiz-Salvador, A. Rabdel
Canosa Pérez-Fragero, Inés
Flores, Amando
Salameh, Carlos
Domínguez-Santos, José Enrique
Ofelia Núñez, Nuria
Ballesteros, María de la Menta
Farías, Tania
author Prieto Laria, Paula
author_facet Prieto Laria, Paula
Fernández-Ibáñez, Pilar
Ruiz-Salvador, A. Rabdel
Canosa Pérez-Fragero, Inés
Flores, Amando
Salameh, Carlos
Domínguez-Santos, José Enrique
Ofelia Núñez, Nuria
Ballesteros, María de la Menta
Farías, Tania
author_role author
author2 Fernández-Ibáñez, Pilar
Ruiz-Salvador, A. Rabdel
Canosa Pérez-Fragero, Inés
Flores, Amando
Salameh, Carlos
Domínguez-Santos, José Enrique
Ofelia Núñez, Nuria
Ballesteros, María de la Menta
Farías, Tania
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Natural zeolite
Iron and copper exchange
Heterogeneous photo-Fenton
Visible light
E. coli
topic Natural zeolite
Iron and copper exchange
Heterogeneous photo-Fenton
Visible light
E. coli
description Natural zeolites can be used to obtain effective catalysts for heterogeneous photocatalytic reactions due to their low cost and favorable physicochemical properties for water treatment. In this work, a natural clinoptilolite is modified by incorporating iron (NZ–Fe) and copper (NZ–Cu) as compensation cations through ion exchange processes. Metals incorporation and structural stability are demonstrated through X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. DR-UV–Vis measurements are used to estimate the bandgap and predict the photocatalytic performance of both materials. Their effectiviness in heterogeneous photocatalytic systems is confirmed by evaluating the inactivation of E. coli as a model pathogen in water. The bacterial detection limit (initial ≈106 CFU/mL) is reached using 1 gL−1 of both catalysts, 100 ppm of H2O2 under visible light (410–710 nm) and near neutral pH in 2 h, with no post-treatment regrowth observed. Experimental data are analyzed according to the Chick–Watson, Weibull, and Hom disinfection kinetic models. Although more hydroxyl radicals are generated (trapping tests) and less iron leachate is observed for NZ–Fe, good reusability is attained for three disinfection cycles when NZ–Cu is used. This makes copper-exchanged clinoptilolite a suitable and low-cost photocatalyst for water disinfection through heterogeneous photo-Fenton-type processes.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-09-22
2025
2025-09-18
2025
2025-09-18
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10433/24741
url https://hdl.handle.net/10433/24741
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://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 Chemistry Europe
publisher.none.fl_str_mv Chemistry Europe
dc.source.none.fl_str_mv reponame:RIO. Repositorio Institucional Olavide
instname:Universidad Pablo de Olavide (UPO)
instname_str Universidad Pablo de Olavide (UPO)
reponame_str RIO. Repositorio Institucional Olavide
collection RIO. Repositorio Institucional Olavide
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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