Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination

In this study, titanium dioxide powder obtained by the sol-gel method and TiO<sub>2</sub> nanotubes, were prepared. In order to increase the TiO<sub>2</sub> photoactivity, the powders and nanotubes obtained were modified by dye sensitization treatment during the oxide synthes...

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Autores: Murcia, Julie Joseane, Ávila-Martínez, Elsa G., Rojas, Hugo, Cubillos, Jairo, Ivanova, Svetlana, Penkova, Anna, Laguna, Óscar H.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/180711
Acceso en línea:http://hdl.handle.net/10261/180711
Access Level:acceso abierto
Palabra clave:TiO2 powders
TiO2 nanotubes
Dye-sensitized TiO2
Photocatalysis
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spelling Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants EliminationMurcia, Julie JoseaneÁvila-Martínez, Elsa G.Rojas, HugoCubillos, JairoIvanova, SvetlanaPenkova, AnnaLaguna, Óscar H.TiO2 powdersTiO2 nanotubesDye-sensitized TiO2PhotocatalysisIn this study, titanium dioxide powder obtained by the sol-gel method and TiO<sub>2</sub> nanotubes, were prepared. In order to increase the TiO<sub>2</sub> photoactivity, the powders and nanotubes obtained were modified by dye sensitization treatment during the oxide synthesis. The sensitizers applied were Quinizarin (Q) and Zinc protoporphyrin (P). The materials synthesized were extensively characterized and it was found that the dye sensitization treatment leads to modify the optical and surface properties of Titania. It was also found that the effectiveness of the dye-sensitized catalysts in the phenol and methyl orange (MO) photodegradation strongly depends on the dye sensitizer employed. Thus, the highest degradation rate for MO was obtained over the conventional Q-TiO<sub>2</sub> photocatalyst. In the case of the nanotubes series, the most effective photocatalyst in the MO degradation was based on TiO<sub>2</sub>-nanotubes sensitized with the dye protoporfirin (ZnP). Selected catalysts were also tested in the phenol and MO photodegradation under visible light and it was observed that these samples are also active under this radiation.This research was funded by Fondo Nacional de Financiamiento para la Ciencia, la Tecnología y la Innovación “Fransisco José de Caldas—Colciencias”, Project 279-2016 and Universidad Pedagógica y Tecnológica de ColombiaWe acknowledge support by the CSIC Open Access Publication Initiative through its Unit of Information Resources for Research (URICI)Multidisciplinary Digital Publishing InstituteConsejo Superior de Investigaciones Científicas (España)Universidad Pedagógica y Tecnológica de ColombiaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/180711reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.3390/nano9040517Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1807112026-05-22T06:33:51Z
dc.title.none.fl_str_mv Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
title Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
spellingShingle Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
Murcia, Julie Joseane
TiO2 powders
TiO2 nanotubes
Dye-sensitized TiO2
Photocatalysis
title_short Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
title_full Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
title_fullStr Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
title_full_unstemmed Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
title_sort Powder and Nanotubes Titania Modified by Dye Sensitization as Photocatalysts for the Organic Pollutants Elimination
dc.creator.none.fl_str_mv Murcia, Julie Joseane
Ávila-Martínez, Elsa G.
Rojas, Hugo
Cubillos, Jairo
Ivanova, Svetlana
Penkova, Anna
Laguna, Óscar H.
author Murcia, Julie Joseane
author_facet Murcia, Julie Joseane
Ávila-Martínez, Elsa G.
Rojas, Hugo
Cubillos, Jairo
Ivanova, Svetlana
Penkova, Anna
Laguna, Óscar H.
author_role author
author2 Ávila-Martínez, Elsa G.
Rojas, Hugo
Cubillos, Jairo
Ivanova, Svetlana
Penkova, Anna
Laguna, Óscar H.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
Universidad Pedagógica y Tecnológica de Colombia
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv TiO2 powders
TiO2 nanotubes
Dye-sensitized TiO2
Photocatalysis
topic TiO2 powders
TiO2 nanotubes
Dye-sensitized TiO2
Photocatalysis
description In this study, titanium dioxide powder obtained by the sol-gel method and TiO<sub>2</sub> nanotubes, were prepared. In order to increase the TiO<sub>2</sub> photoactivity, the powders and nanotubes obtained were modified by dye sensitization treatment during the oxide synthesis. The sensitizers applied were Quinizarin (Q) and Zinc protoporphyrin (P). The materials synthesized were extensively characterized and it was found that the dye sensitization treatment leads to modify the optical and surface properties of Titania. It was also found that the effectiveness of the dye-sensitized catalysts in the phenol and methyl orange (MO) photodegradation strongly depends on the dye sensitizer employed. Thus, the highest degradation rate for MO was obtained over the conventional Q-TiO<sub>2</sub> photocatalyst. In the case of the nanotubes series, the most effective photocatalyst in the MO degradation was based on TiO<sub>2</sub>-nanotubes sensitized with the dye protoporfirin (ZnP). Selected catalysts were also tested in the phenol and MO photodegradation under visible light and it was observed that these samples are also active under this radiation.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/180711
url http://hdl.handle.net/10261/180711
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.3390/nano9040517
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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