Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated wi...

Autores
Vargas Villanueva, Steven; Velásquez Tamayo, Juan Pablo; Torres Cerón, Darwin Augusto; Mercado, D. Fabio; Torres Palma, Ricardo A.; Riassetto, David; Riva, Jullieta Soledad; Amaya Roncancio, S.; Castilla Acevedo, Samir Fernando; Restrepo Parra, Elisabeth
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This work reports S-TiO2 doped coatings to reduce Cr6+ to Cr3+ obtained from a Ti electrode through the Plasma Electrolytic Oxidation (PEO) process. The Ti sheets (20 × 20 × 1 mm) were submerged on 0.1 M H2SO4, and values of the duty cycle from 2% to 50% were applied to obtain various materials. SEM, XRD, AFM, XPS, and DRS techniques were used to characterize the resultant surfaces. It was observed that the duty cycle strongly influences the crystalline/amorphous ratio, anatase/rutile ratio, porosity density, pores size distribution, and surface roughness. Besides, it is explained that the introduction of SO42- into the TiO2 structure can take place either in the Ti or O places in the crystalline lattice. All materials showed photocatalytic properties to reduce Cr6+ to Cr3+ under UVC light (254 nm), decreasing the efficiency with the increase of the duty cycle. Additionally, the introduction of EDTA showed a positive synergy with the heterogeneous photocatalytic process when the material was obtained with the highest duty cycle. This last result was attributed to the relatively low bandgap and the high recombination rate; furthermore, EDTA acts as holes and hydroxyl radical scavenger. Thus, the photoelectrochemical system for the treatment of wastewater was evaluated, and again, the same materials showed the highest performance. In the same way, the re-use of the material obtained with the 2% duty cycle was tested, getting satisfactory results, obtaining 96.14 ± 2.77% Cr6+ reduction even after seven cycles of reuse.
Fil: Vargas Villanueva, Steven. Universidad Nacional de Colombia Manizales; Colombia
Fil: Velásquez Tamayo, Juan Pablo. Universidad Nacional de Colombia Manizales; Colombia
Fil: Torres Cerón, Darwin Augusto. Universidad Nacional de Colombia Manizales; Colombia
Fil: Mercado, D. Fabio. Universidad de Antioquia. Facultad de Ciencias Exactas y Naturales;
Fil: Torres Palma, Ricardo A.. Universidad de Antioquia. Facultad de Ciencias Exactas y Naturales;
Fil: Riassetto, David. Universidad Nacional de Colombia Manizales; Colombia
Fil: Riva, Jullieta Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Amaya Roncancio, S.. Universidad Nacional de Colombia Manizales; Colombia
Fil: Castilla Acevedo, Samir Fernando. Universidad Nacional de Colombia Manizales; Colombia
Fil: Restrepo Parra, Elisabeth. Universidad Nacional de Colombia Manizales; Colombia
Materia
CR6+
DUTY CYCLE
PEO
REDUCTION
S-TIO2
WASTEWATER
Nivel de accesibilidad
acceso embargado
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/226690
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/226690
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+Vargas Villanueva, StevenVelásquez Tamayo, Juan PabloTorres Cerón, Darwin AugustoMercado, D. FabioTorres Palma, Ricardo A.Riassetto, DavidRiva, Jullieta SoledadAmaya Roncancio, S.Castilla Acevedo, Samir FernandoRestrepo Parra, ElisabethCR6+DUTY CYCLEPEOREDUCTIONS-TIO2WASTEWATERhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1This work reports S-TiO2 doped coatings to reduce Cr6+ to Cr3+ obtained from a Ti electrode through the Plasma Electrolytic Oxidation (PEO) process. The Ti sheets (20 × 20 × 1 mm) were submerged on 0.1 M H2SO4, and values of the duty cycle from 2% to 50% were applied to obtain various materials. SEM, XRD, AFM, XPS, and DRS techniques were used to characterize the resultant surfaces. It was observed that the duty cycle strongly influences the crystalline/amorphous ratio, anatase/rutile ratio, porosity density, pores size distribution, and surface roughness. Besides, it is explained that the introduction of SO42- into the TiO2 structure can take place either in the Ti or O places in the crystalline lattice. All materials showed photocatalytic properties to reduce Cr6+ to Cr3+ under UVC light (254 nm), decreasing the efficiency with the increase of the duty cycle. Additionally, the introduction of EDTA showed a positive synergy with the heterogeneous photocatalytic process when the material was obtained with the highest duty cycle. This last result was attributed to the relatively low bandgap and the high recombination rate; furthermore, EDTA acts as holes and hydroxyl radical scavenger. Thus, the photoelectrochemical system for the treatment of wastewater was evaluated, and again, the same materials showed the highest performance. In the same way, the re-use of the material obtained with the 2% duty cycle was tested, getting satisfactory results, obtaining 96.14 ± 2.77% Cr6+ reduction even after seven cycles of reuse.Fil: Vargas Villanueva, Steven. Universidad Nacional de Colombia Manizales; ColombiaFil: Velásquez Tamayo, Juan Pablo. Universidad Nacional de Colombia Manizales; ColombiaFil: Torres Cerón, Darwin Augusto. Universidad Nacional de Colombia Manizales; ColombiaFil: Mercado, D. Fabio. Universidad de Antioquia. Facultad de Ciencias Exactas y Naturales;Fil: Torres Palma, Ricardo A.. Universidad de Antioquia. Facultad de Ciencias Exactas y Naturales;Fil: Riassetto, David. Universidad Nacional de Colombia Manizales; ColombiaFil: Riva, Jullieta Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Amaya Roncancio, S.. Universidad Nacional de Colombia Manizales; ColombiaFil: Castilla Acevedo, Samir Fernando. Universidad Nacional de Colombia Manizales; ColombiaFil: Restrepo Parra, Elisabeth. Universidad Nacional de Colombia Manizales; ColombiaElsevier2023-10info:eu-repo/date/embargoEnd/2024-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/226690Vargas Villanueva, Steven; Velásquez Tamayo, Juan Pablo; Torres Cerón, Darwin Augusto; Mercado, D. Fabio; Torres Palma, Ricardo A.; et al.; Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+; Elsevier; Journal of Environmental Chemical Engineering; 11; 5; 10-2023; 1-48; 1102462213-3437CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jece.2023.110246info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S2213343723009855info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:18:13Zoai:ri.conicet.gov.ar:11336/226690instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:18:14.173CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
title Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
spellingShingle Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
Vargas Villanueva, Steven
CR6+
DUTY CYCLE
PEO
REDUCTION
S-TIO2
WASTEWATER
title_short Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
title_full Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
title_fullStr Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
title_full_unstemmed Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
title_sort Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+
dc.creator.none.fl_str_mv Vargas Villanueva, Steven
Velásquez Tamayo, Juan Pablo
Torres Cerón, Darwin Augusto
Mercado, D. Fabio
Torres Palma, Ricardo A.
Riassetto, David
Riva, Jullieta Soledad
Amaya Roncancio, S.
Castilla Acevedo, Samir Fernando
Restrepo Parra, Elisabeth
author Vargas Villanueva, Steven
author_facet Vargas Villanueva, Steven
Velásquez Tamayo, Juan Pablo
Torres Cerón, Darwin Augusto
Mercado, D. Fabio
Torres Palma, Ricardo A.
Riassetto, David
Riva, Jullieta Soledad
Amaya Roncancio, S.
Castilla Acevedo, Samir Fernando
Restrepo Parra, Elisabeth
author_role author
author2 Velásquez Tamayo, Juan Pablo
Torres Cerón, Darwin Augusto
Mercado, D. Fabio
Torres Palma, Ricardo A.
Riassetto, David
Riva, Jullieta Soledad
Amaya Roncancio, S.
Castilla Acevedo, Samir Fernando
Restrepo Parra, Elisabeth
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv CR6+
DUTY CYCLE
PEO
REDUCTION
S-TIO2
WASTEWATER
topic CR6+
DUTY CYCLE
PEO
REDUCTION
S-TIO2
WASTEWATER
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This work reports S-TiO2 doped coatings to reduce Cr6+ to Cr3+ obtained from a Ti electrode through the Plasma Electrolytic Oxidation (PEO) process. The Ti sheets (20 × 20 × 1 mm) were submerged on 0.1 M H2SO4, and values of the duty cycle from 2% to 50% were applied to obtain various materials. SEM, XRD, AFM, XPS, and DRS techniques were used to characterize the resultant surfaces. It was observed that the duty cycle strongly influences the crystalline/amorphous ratio, anatase/rutile ratio, porosity density, pores size distribution, and surface roughness. Besides, it is explained that the introduction of SO42- into the TiO2 structure can take place either in the Ti or O places in the crystalline lattice. All materials showed photocatalytic properties to reduce Cr6+ to Cr3+ under UVC light (254 nm), decreasing the efficiency with the increase of the duty cycle. Additionally, the introduction of EDTA showed a positive synergy with the heterogeneous photocatalytic process when the material was obtained with the highest duty cycle. This last result was attributed to the relatively low bandgap and the high recombination rate; furthermore, EDTA acts as holes and hydroxyl radical scavenger. Thus, the photoelectrochemical system for the treatment of wastewater was evaluated, and again, the same materials showed the highest performance. In the same way, the re-use of the material obtained with the 2% duty cycle was tested, getting satisfactory results, obtaining 96.14 ± 2.77% Cr6+ reduction even after seven cycles of reuse.
Fil: Vargas Villanueva, Steven. Universidad Nacional de Colombia Manizales; Colombia
Fil: Velásquez Tamayo, Juan Pablo. Universidad Nacional de Colombia Manizales; Colombia
Fil: Torres Cerón, Darwin Augusto. Universidad Nacional de Colombia Manizales; Colombia
Fil: Mercado, D. Fabio. Universidad de Antioquia. Facultad de Ciencias Exactas y Naturales;
Fil: Torres Palma, Ricardo A.. Universidad de Antioquia. Facultad de Ciencias Exactas y Naturales;
Fil: Riassetto, David. Universidad Nacional de Colombia Manizales; Colombia
Fil: Riva, Jullieta Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Amaya Roncancio, S.. Universidad Nacional de Colombia Manizales; Colombia
Fil: Castilla Acevedo, Samir Fernando. Universidad Nacional de Colombia Manizales; Colombia
Fil: Restrepo Parra, Elisabeth. Universidad Nacional de Colombia Manizales; Colombia
description This work reports S-TiO2 doped coatings to reduce Cr6+ to Cr3+ obtained from a Ti electrode through the Plasma Electrolytic Oxidation (PEO) process. The Ti sheets (20 × 20 × 1 mm) were submerged on 0.1 M H2SO4, and values of the duty cycle from 2% to 50% were applied to obtain various materials. SEM, XRD, AFM, XPS, and DRS techniques were used to characterize the resultant surfaces. It was observed that the duty cycle strongly influences the crystalline/amorphous ratio, anatase/rutile ratio, porosity density, pores size distribution, and surface roughness. Besides, it is explained that the introduction of SO42- into the TiO2 structure can take place either in the Ti or O places in the crystalline lattice. All materials showed photocatalytic properties to reduce Cr6+ to Cr3+ under UVC light (254 nm), decreasing the efficiency with the increase of the duty cycle. Additionally, the introduction of EDTA showed a positive synergy with the heterogeneous photocatalytic process when the material was obtained with the highest duty cycle. This last result was attributed to the relatively low bandgap and the high recombination rate; furthermore, EDTA acts as holes and hydroxyl radical scavenger. Thus, the photoelectrochemical system for the treatment of wastewater was evaluated, and again, the same materials showed the highest performance. In the same way, the re-use of the material obtained with the 2% duty cycle was tested, getting satisfactory results, obtaining 96.14 ± 2.77% Cr6+ reduction even after seven cycles of reuse.
publishDate 2023
dc.date.none.fl_str_mv 2023-10
info:eu-repo/date/embargoEnd/2024-05-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/226690
Vargas Villanueva, Steven; Velásquez Tamayo, Juan Pablo; Torres Cerón, Darwin Augusto; Mercado, D. Fabio; Torres Palma, Ricardo A.; et al.; Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+; Elsevier; Journal of Environmental Chemical Engineering; 11; 5; 10-2023; 1-48; 110246
2213-3437
CONICET Digital
CONICET
url http://hdl.handle.net/11336/226690
identifier_str_mv Vargas Villanueva, Steven; Velásquez Tamayo, Juan Pablo; Torres Cerón, Darwin Augusto; Mercado, D. Fabio; Torres Palma, Ricardo A.; et al.; Impact of the duty cycle on the morphology and photocatalytic properties of S-TiO2 obtained by plasma electrolytic oxidation to treat real electroplating wastewater contaminated with Cr6+; Elsevier; Journal of Environmental Chemical Engineering; 11; 5; 10-2023; 1-48; 110246
2213-3437
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jece.2023.110246
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S2213343723009855
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv embargoedAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
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:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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