Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2

This article reports the synthesis and characterization of pure and N-, B-, and Ag-doped TiO2 and the ability of these oxides to photodegrade methylene blue (MB) under sunlight or UV-ABC radiation. The compounds were synthesized using the sol-gel method and characterized by scanning electron microsc...

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Autores: Bezerra, Paula C. S., Cavalcante, Rodrigo P., Garcia, Aline, Wender, Heberton, Martines, Marco A. U., Casagrande, Gleison A., Giménez Farreras, Jaume, Marco Buj, Pilar, Oliveira, Silvio César de, Machulek Jr., Amílcar
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/120031
Acceso en línea:https://hdl.handle.net/2445/120031
Access Level:acceso abierto
Palabra clave:Catalitzadors
Radiació ultraviolada
Catalysts
Ultraviolet radiation
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spelling Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2Bezerra, Paula C. S.Cavalcante, Rodrigo P.Garcia, AlineWender, HebertonMartines, Marco A. U.Casagrande, Gleison A.Giménez Farreras, JaumeMarco Buj, PilarOliveira, Silvio César deMachulek Jr., AmílcarCatalitzadorsRadiació ultravioladaCatalystsUltraviolet radiationThis article reports the synthesis and characterization of pure and N-, B-, and Ag-doped TiO2 and the ability of these oxides to photodegrade methylene blue (MB) under sunlight or UV-ABC radiation. The compounds were synthesized using the sol-gel method and characterized by scanning electron microscopy, X-ray diffraction, diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. Photocatalytic efficiency was significantly increased by N-doping, resulting in 98% MB decomposition under UV-ABC irradiation for 180 min. Ag- and B-doped TiO2 lowered MB degradation rates to 52 and 73%, respectively, compared with pure TiO2. The same behavior was observed with exposure to UV-Vis, with 88, 65, 60, and 42% MB removal with N-doped, pure, B-doped, and Ag-doped TiO2, respectively. Under visible light alone, N-doped TiO2 exhibited higher photocatalytic efficiency than commercial P25-type TiO2. Photocatalysis with N-doped TiO2 proved to be a promising alternative for MB degradation, given the potential of employing solar energy, thus minimizing operating costs.Sociedade Brasileira de Química2018201820172018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion15 p.application/pdfhttps://hdl.handle.net/2445/120031Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.21577/0103-5053.20170040Journal of the Brazilian Chemical Society, 2017, vol. 28, num. 9, p. 1788-1802https://doi.org/10.21577/0103-5053.20170040cc-by (c) Sociedade Brasileira de Química, 2017http://creativecommons.org/licenses/by/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1200312026-05-29T05:05:01Z
dc.title.none.fl_str_mv Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
title Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
spellingShingle Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
Bezerra, Paula C. S.
Catalitzadors
Radiació ultraviolada
Catalysts
Ultraviolet radiation
title_short Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
title_full Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
title_fullStr Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
title_full_unstemmed Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
title_sort Synthesis, characterization, and photocatalytic activity of pure and N-, B-, or Ag- Doped TiO2
dc.creator.none.fl_str_mv Bezerra, Paula C. S.
Cavalcante, Rodrigo P.
Garcia, Aline
Wender, Heberton
Martines, Marco A. U.
Casagrande, Gleison A.
Giménez Farreras, Jaume
Marco Buj, Pilar
Oliveira, Silvio César de
Machulek Jr., Amílcar
author Bezerra, Paula C. S.
author_facet Bezerra, Paula C. S.
Cavalcante, Rodrigo P.
Garcia, Aline
Wender, Heberton
Martines, Marco A. U.
Casagrande, Gleison A.
Giménez Farreras, Jaume
Marco Buj, Pilar
Oliveira, Silvio César de
Machulek Jr., Amílcar
author_role author
author2 Cavalcante, Rodrigo P.
Garcia, Aline
Wender, Heberton
Martines, Marco A. U.
Casagrande, Gleison A.
Giménez Farreras, Jaume
Marco Buj, Pilar
Oliveira, Silvio César de
Machulek Jr., Amílcar
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Catalitzadors
Radiació ultraviolada
Catalysts
Ultraviolet radiation
topic Catalitzadors
Radiació ultraviolada
Catalysts
Ultraviolet radiation
description This article reports the synthesis and characterization of pure and N-, B-, and Ag-doped TiO2 and the ability of these oxides to photodegrade methylene blue (MB) under sunlight or UV-ABC radiation. The compounds were synthesized using the sol-gel method and characterized by scanning electron microscopy, X-ray diffraction, diffuse reflectance spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. Photocatalytic efficiency was significantly increased by N-doping, resulting in 98% MB decomposition under UV-ABC irradiation for 180 min. Ag- and B-doped TiO2 lowered MB degradation rates to 52 and 73%, respectively, compared with pure TiO2. The same behavior was observed with exposure to UV-Vis, with 88, 65, 60, and 42% MB removal with N-doped, pure, B-doped, and Ag-doped TiO2, respectively. Under visible light alone, N-doped TiO2 exhibited higher photocatalytic efficiency than commercial P25-type TiO2. Photocatalysis with N-doped TiO2 proved to be a promising alternative for MB degradation, given the potential of employing solar energy, thus minimizing operating costs.
publishDate 2017
dc.date.none.fl_str_mv 2017
2018
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/120031
url https://hdl.handle.net/2445/120031
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.21577/0103-5053.20170040
Journal of the Brazilian Chemical Society, 2017, vol. 28, num. 9, p. 1788-1802
https://doi.org/10.21577/0103-5053.20170040
dc.rights.none.fl_str_mv cc-by (c) Sociedade Brasileira de Química, 2017
http://creativecommons.org/licenses/by/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by (c) Sociedade Brasileira de Química, 2017
http://creativecommons.org/licenses/by/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15 p.
application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Química i Química Analítica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869402910043930624
score 15,812429

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