Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis

Autores
Vera, Maria Laura; Leyva, Gabriela; Litter, Marta Irene
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
TiO2 coatings were obtained by a combination of a sol?gel process with the addition of commercial TiO2 particles (Degussa-Evonik P25). Simple and composite (with P25) sols were deposited by dip-coating on glass plates giving simple and composite coatings. The order of addition of reagents in the preparation of sols, the incorporation of P25 to the sols, and the thermal treatments were analyzed as variables to improve the photocatalytic activity. The samples were completely characterized with respect to the amount of deposited TiO2, the crystal structure (XRD) and the morphology (SEM). The activity of the supported photocatalysts (simple, composite and P25 coatings) was evaluated using 4-chlorophenol degradation and Cr(VI) reduction in the presence of EDTA as model photocatalytic systems. The stability of sols and the photocatalytic activity of the resulted coatings depended strongly on the order of addition of the reagents to obtain the simple sol. Sols prepared by adding the alcohol-water-HCl mixture to the precursor were the simple sols presenting a very good stability that permitted the incorporation of powdered P25 without the addition of additives. The composite coatings prepared from these simple sols were the most active in both photocatalytic systems and also presented the highest resistance to scratch.
Fil: Vera, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Leyva, Gabriela. Comisión Nacional de Energía Atómica; Argentina
Fil: Litter, Marta Irene. Comisión Nacional de Energía Atómica; Argentina. Comisión Nacional de Investigación Científica y Tecnológica; Chile
Materia
Heterogeneous Photocatalysis
Tio2 Films
Sol Gel
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:11336/44441
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/44441
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous PhotocatalysisVera, Maria LauraLeyva, GabrielaLitter, Marta IreneHeterogeneous PhotocatalysisTio2 FilmsSol Gelhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2TiO2 coatings were obtained by a combination of a sol?gel process with the addition of commercial TiO2 particles (Degussa-Evonik P25). Simple and composite (with P25) sols were deposited by dip-coating on glass plates giving simple and composite coatings. The order of addition of reagents in the preparation of sols, the incorporation of P25 to the sols, and the thermal treatments were analyzed as variables to improve the photocatalytic activity. The samples were completely characterized with respect to the amount of deposited TiO2, the crystal structure (XRD) and the morphology (SEM). The activity of the supported photocatalysts (simple, composite and P25 coatings) was evaluated using 4-chlorophenol degradation and Cr(VI) reduction in the presence of EDTA as model photocatalytic systems. The stability of sols and the photocatalytic activity of the resulted coatings depended strongly on the order of addition of the reagents to obtain the simple sol. Sols prepared by adding the alcohol-water-HCl mixture to the precursor were the simple sols presenting a very good stability that permitted the incorporation of powdered P25 without the addition of additives. The composite coatings prepared from these simple sols were the most active in both photocatalytic systems and also presented the highest resistance to scratch.Fil: Vera, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; ArgentinaFil: Leyva, Gabriela. Comisión Nacional de Energía Atómica; ArgentinaFil: Litter, Marta Irene. Comisión Nacional de Energía Atómica; Argentina. Comisión Nacional de Investigación Científica y Tecnológica; ChileAmerican Scientific Publishers2017-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/44441Vera, Maria Laura; Leyva, Gabriela; Litter, Marta Irene; Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis; American Scientific Publishers; Journal of Nanoscience and Nanotechnology; 17; 7; 7-2017; 4946-49541533-48801533-4899CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1166/jnn.2017.13430info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/asp/jnn/2017/00000017/00000007/art00072info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:50:34Zoai:ri.conicet.gov.ar:11336/44441instacron: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:34982025-09-03 09:50:35.274CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
title Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
spellingShingle Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
Vera, Maria Laura
Heterogeneous Photocatalysis
Tio2 Films
Sol Gel
title_short Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
title_full Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
title_fullStr Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
title_full_unstemmed Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
title_sort Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis
dc.creator.none.fl_str_mv Vera, Maria Laura
Leyva, Gabriela
Litter, Marta Irene
author Vera, Maria Laura
author_facet Vera, Maria Laura
Leyva, Gabriela
Litter, Marta Irene
author_role author
author2 Leyva, Gabriela
Litter, Marta Irene
author2_role author
author
dc.subject.none.fl_str_mv Heterogeneous Photocatalysis
Tio2 Films
Sol Gel
topic Heterogeneous Photocatalysis
Tio2 Films
Sol Gel
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv TiO2 coatings were obtained by a combination of a sol?gel process with the addition of commercial TiO2 particles (Degussa-Evonik P25). Simple and composite (with P25) sols were deposited by dip-coating on glass plates giving simple and composite coatings. The order of addition of reagents in the preparation of sols, the incorporation of P25 to the sols, and the thermal treatments were analyzed as variables to improve the photocatalytic activity. The samples were completely characterized with respect to the amount of deposited TiO2, the crystal structure (XRD) and the morphology (SEM). The activity of the supported photocatalysts (simple, composite and P25 coatings) was evaluated using 4-chlorophenol degradation and Cr(VI) reduction in the presence of EDTA as model photocatalytic systems. The stability of sols and the photocatalytic activity of the resulted coatings depended strongly on the order of addition of the reagents to obtain the simple sol. Sols prepared by adding the alcohol-water-HCl mixture to the precursor were the simple sols presenting a very good stability that permitted the incorporation of powdered P25 without the addition of additives. The composite coatings prepared from these simple sols were the most active in both photocatalytic systems and also presented the highest resistance to scratch.
Fil: Vera, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Materiales de Misiones. Universidad Nacional de Misiones. Facultad de Ciencias Exactas Químicas y Naturales. Instituto de Materiales de Misiones; Argentina
Fil: Leyva, Gabriela. Comisión Nacional de Energía Atómica; Argentina
Fil: Litter, Marta Irene. Comisión Nacional de Energía Atómica; Argentina. Comisión Nacional de Investigación Científica y Tecnológica; Chile
description TiO2 coatings were obtained by a combination of a sol?gel process with the addition of commercial TiO2 particles (Degussa-Evonik P25). Simple and composite (with P25) sols were deposited by dip-coating on glass plates giving simple and composite coatings. The order of addition of reagents in the preparation of sols, the incorporation of P25 to the sols, and the thermal treatments were analyzed as variables to improve the photocatalytic activity. The samples were completely characterized with respect to the amount of deposited TiO2, the crystal structure (XRD) and the morphology (SEM). The activity of the supported photocatalysts (simple, composite and P25 coatings) was evaluated using 4-chlorophenol degradation and Cr(VI) reduction in the presence of EDTA as model photocatalytic systems. The stability of sols and the photocatalytic activity of the resulted coatings depended strongly on the order of addition of the reagents to obtain the simple sol. Sols prepared by adding the alcohol-water-HCl mixture to the precursor were the simple sols presenting a very good stability that permitted the incorporation of powdered P25 without the addition of additives. The composite coatings prepared from these simple sols were the most active in both photocatalytic systems and also presented the highest resistance to scratch.
publishDate 2017
dc.date.none.fl_str_mv 2017-07
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/11336/44441
Vera, Maria Laura; Leyva, Gabriela; Litter, Marta Irene; Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis; American Scientific Publishers; Journal of Nanoscience and Nanotechnology; 17; 7; 7-2017; 4946-4954
1533-4880
1533-4899
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44441
identifier_str_mv Vera, Maria Laura; Leyva, Gabriela; Litter, Marta Irene; Simple TiO 2 Coatings by Sol–Gel Techniques Combined with Commercial TiO 2 Particles for Use in Heterogeneous Photocatalysis; American Scientific Publishers; Journal of Nanoscience and Nanotechnology; 17; 7; 7-2017; 4946-4954
1533-4880
1533-4899
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1166/jnn.2017.13430
info:eu-repo/semantics/altIdentifier/url/http://www.ingentaconnect.com/content/asp/jnn/2017/00000017/00000007/art00072
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 American Scientific Publishers
publisher.none.fl_str_mv American Scientific Publishers
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 13.13397

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