Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation

Autores
Vallejo Lozada, William Andrés; Cantillo, Alvaro; Salazar, Briggitte; Diaz Uribe, Carlos Enrique; Ramos Cervantes, Wilkendry; Romero, Eduard; Hurtado, Mikel
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film deposition. The physicochemical characterization of the catalysts was carried out by Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffraction, and diffuse reflectance measurements. The photocatalytic activity was studied under visible irradiation in aqueous solution, and kinetic parameters were determined by pseudo-first-order fitting. The Raman spectra results evinced the doping process and suggested the formation of heterojunctions for both dopants. The structural diffraction patterns indicated that the catalysts were polycrystalline and demonstrated the presence of a ZnO wurtzite crystalline phase. The SEM analysis showed that the morphological properties changed significantly, the micro-aggregates disappeared, and agglomeration was reduced after modification of ZnO. The ZnO optical bandgap (3.22 eV) reduced after the doping process, these being ZnO:Co (2.39 eV) and ZnO:Co (3.01 eV). Finally, the kinetic results of methylene blue photodegradation reached 62.6% for ZnO:Co thin films and 42.5% for ZnO:Cu thin films.
Fil: Vallejo Lozada, William Andrés. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Cantillo, Alvaro. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Salazar, Briggitte. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Diaz Uribe, Carlos Enrique. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Ramos Cervantes, Wilkendry. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia. 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: Romero, Eduard. Universidad Nacional de Colombia. Sede Bogotá; Colombia
Fil: Hurtado, Mikel. Universidad Minuto de Dios; Colombia. Universidad Central; Colombia
Materia
DOPING
HETEROGENEOUS PHOTOCATALYSIS
THIN FILMS
ZNO
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/144367
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/144367
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiationVallejo Lozada, William AndrésCantillo, AlvaroSalazar, BriggitteDiaz Uribe, Carlos EnriqueRamos Cervantes, WilkendryRomero, EduardHurtado, MikelDOPINGHETEROGENEOUS PHOTOCATALYSISTHIN FILMSZNOhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film deposition. The physicochemical characterization of the catalysts was carried out by Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffraction, and diffuse reflectance measurements. The photocatalytic activity was studied under visible irradiation in aqueous solution, and kinetic parameters were determined by pseudo-first-order fitting. The Raman spectra results evinced the doping process and suggested the formation of heterojunctions for both dopants. The structural diffraction patterns indicated that the catalysts were polycrystalline and demonstrated the presence of a ZnO wurtzite crystalline phase. The SEM analysis showed that the morphological properties changed significantly, the micro-aggregates disappeared, and agglomeration was reduced after modification of ZnO. The ZnO optical bandgap (3.22 eV) reduced after the doping process, these being ZnO:Co (2.39 eV) and ZnO:Co (3.01 eV). Finally, the kinetic results of methylene blue photodegradation reached 62.6% for ZnO:Co thin films and 42.5% for ZnO:Cu thin films.Fil: Vallejo Lozada, William Andrés. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; ColombiaFil: Cantillo, Alvaro. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; ColombiaFil: Salazar, Briggitte. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; ColombiaFil: Diaz Uribe, Carlos Enrique. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; ColombiaFil: Ramos Cervantes, Wilkendry. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia. 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: Romero, Eduard. Universidad Nacional de Colombia. Sede Bogotá; ColombiaFil: Hurtado, Mikel. Universidad Minuto de Dios; Colombia. Universidad Central; ColombiaMDPI AG2020-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/144367Vallejo Lozada, William Andrés; Cantillo, Alvaro; Salazar, Briggitte; Diaz Uribe, Carlos Enrique; Ramos Cervantes, Wilkendry; et al.; Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation; MDPI AG; Catalysts; 10; 5; 5-2020; 1-132073-4344CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4344/10/5/528info:eu-repo/semantics/altIdentifier/doi/10.3390/catal10050528info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:50:43Zoai:ri.conicet.gov.ar:11336/144367instacron: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:34982025-10-15 14:50:43.889CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
title Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
spellingShingle Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
Vallejo Lozada, William Andrés
DOPING
HETEROGENEOUS PHOTOCATALYSIS
THIN FILMS
ZNO
title_short Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
title_full Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
title_fullStr Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
title_full_unstemmed Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
title_sort Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation
dc.creator.none.fl_str_mv Vallejo Lozada, William Andrés
Cantillo, Alvaro
Salazar, Briggitte
Diaz Uribe, Carlos Enrique
Ramos Cervantes, Wilkendry
Romero, Eduard
Hurtado, Mikel
author Vallejo Lozada, William Andrés
author_facet Vallejo Lozada, William Andrés
Cantillo, Alvaro
Salazar, Briggitte
Diaz Uribe, Carlos Enrique
Ramos Cervantes, Wilkendry
Romero, Eduard
Hurtado, Mikel
author_role author
author2 Cantillo, Alvaro
Salazar, Briggitte
Diaz Uribe, Carlos Enrique
Ramos Cervantes, Wilkendry
Romero, Eduard
Hurtado, Mikel
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv DOPING
HETEROGENEOUS PHOTOCATALYSIS
THIN FILMS
ZNO
topic DOPING
HETEROGENEOUS PHOTOCATALYSIS
THIN FILMS
ZNO
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film deposition. The physicochemical characterization of the catalysts was carried out by Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffraction, and diffuse reflectance measurements. The photocatalytic activity was studied under visible irradiation in aqueous solution, and kinetic parameters were determined by pseudo-first-order fitting. The Raman spectra results evinced the doping process and suggested the formation of heterojunctions for both dopants. The structural diffraction patterns indicated that the catalysts were polycrystalline and demonstrated the presence of a ZnO wurtzite crystalline phase. The SEM analysis showed that the morphological properties changed significantly, the micro-aggregates disappeared, and agglomeration was reduced after modification of ZnO. The ZnO optical bandgap (3.22 eV) reduced after the doping process, these being ZnO:Co (2.39 eV) and ZnO:Co (3.01 eV). Finally, the kinetic results of methylene blue photodegradation reached 62.6% for ZnO:Co thin films and 42.5% for ZnO:Cu thin films.
Fil: Vallejo Lozada, William Andrés. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Cantillo, Alvaro. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Salazar, Briggitte. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Diaz Uribe, Carlos Enrique. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia
Fil: Ramos Cervantes, Wilkendry. Universidad del Atlantico. Facultad de Cs. Basicas. Prog. de Química; Colombia. 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: Romero, Eduard. Universidad Nacional de Colombia. Sede Bogotá; Colombia
Fil: Hurtado, Mikel. Universidad Minuto de Dios; Colombia. Universidad Central; Colombia
description We synthesized and characterized both Co-doped ZnO (ZnO:Co) and Cu-doped ZnO (ZnO:Cu) thin films. The catalysts’ synthesis was carried out by the sol–gel method while the doctor blade technique was used for thin film deposition. The physicochemical characterization of the catalysts was carried out by Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffraction, and diffuse reflectance measurements. The photocatalytic activity was studied under visible irradiation in aqueous solution, and kinetic parameters were determined by pseudo-first-order fitting. The Raman spectra results evinced the doping process and suggested the formation of heterojunctions for both dopants. The structural diffraction patterns indicated that the catalysts were polycrystalline and demonstrated the presence of a ZnO wurtzite crystalline phase. The SEM analysis showed that the morphological properties changed significantly, the micro-aggregates disappeared, and agglomeration was reduced after modification of ZnO. The ZnO optical bandgap (3.22 eV) reduced after the doping process, these being ZnO:Co (2.39 eV) and ZnO:Co (3.01 eV). Finally, the kinetic results of methylene blue photodegradation reached 62.6% for ZnO:Co thin films and 42.5% for ZnO:Cu thin films.
publishDate 2020
dc.date.none.fl_str_mv 2020-05
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/11336/144367
Vallejo Lozada, William Andrés; Cantillo, Alvaro; Salazar, Briggitte; Diaz Uribe, Carlos Enrique; Ramos Cervantes, Wilkendry; et al.; Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation; MDPI AG; Catalysts; 10; 5; 5-2020; 1-13
2073-4344
CONICET Digital
CONICET
url http://hdl.handle.net/11336/144367
identifier_str_mv Vallejo Lozada, William Andrés; Cantillo, Alvaro; Salazar, Briggitte; Diaz Uribe, Carlos Enrique; Ramos Cervantes, Wilkendry; et al.; Comparative study of ZnO thin films doped with transition metals (Cu and Co) for methylene blue photodegradation under visible irradiation; MDPI AG; Catalysts; 10; 5; 5-2020; 1-13
2073-4344
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2073-4344/10/5/528
info:eu-repo/semantics/altIdentifier/doi/10.3390/catal10050528
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
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 13.22299

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