Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)

Detalhes bibliográficos
Autor(a) principal: Nogueira, André E.
Data de Publicação: 2015
Outros Autores: Lima, Alan R.F., Longo, Elson [UNESP], Leite, Edson R., Camargo, Emerson R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jphotochem.2015.07.012
http://hdl.handle.net/11449/177465
Resumo: Pure (Bi<inf>12</inf>TiO<inf>20</inf>) and La- and Pb-doped (Bi<inf>12-x</inf>La<inf>x</inf>TiO<inf>20</inf> e Bi<inf>12-x</inf>Pb<inf>x</inf>TiO<inf>20</inf>, with x up to 1.50) bismuth titanates were prepared by the oxidant peroxide method (OPM) and used for photodegradation of rhodamine b (RhB). The synthesized materials samples were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), X-ray photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM), X-ray fluorescence (XRF) and N<inf>2</inf> physical adsorption. Rietveld refinements showed samples consisting mainly of sillenite structure with small amounts of a perovskite secondary phase in the La- and Pb-doped materials. The photocatalytic properties of all materials were evaluated by the discoloration of RhB solution under ultraviolet (UV) and visible irradiation, where the bismuth titanate obtained by the OPM route showed higher photocatalytic activity than the commercial TiO<inf>2</inf>. Furthermore, it was observed that the insertion of different ions in the bismuth titanate structure changes the band gap energy in different ways, which consequently altered the photocatalytic activities of the materials.
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spelling Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)Bismuth titanateChemical synthesisOptical propertiesPhotocatalysisPure (Bi<inf>12</inf>TiO<inf>20</inf>) and La- and Pb-doped (Bi<inf>12-x</inf>La<inf>x</inf>TiO<inf>20</inf> e Bi<inf>12-x</inf>Pb<inf>x</inf>TiO<inf>20</inf>, with x up to 1.50) bismuth titanates were prepared by the oxidant peroxide method (OPM) and used for photodegradation of rhodamine b (RhB). The synthesized materials samples were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), X-ray photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM), X-ray fluorescence (XRF) and N<inf>2</inf> physical adsorption. Rietveld refinements showed samples consisting mainly of sillenite structure with small amounts of a perovskite secondary phase in the La- and Pb-doped materials. The photocatalytic properties of all materials were evaluated by the discoloration of RhB solution under ultraviolet (UV) and visible irradiation, where the bismuth titanate obtained by the OPM route showed higher photocatalytic activity than the commercial TiO<inf>2</inf>. Furthermore, it was observed that the insertion of different ions in the bismuth titanate structure changes the band gap energy in different ways, which consequently altered the photocatalytic activities of the materials.LIEC-Laboratório Interdisciplinar de Eletroquímica e Cerâmica, Departamento de Química, UFSCar-Universidade Federal de São Carlos, CP 676 São, Rod. Washington Luis km 235Instituto de Química de Araraquara, UNESP-Universidade Estadual Paulista, CP 355 Araraquara, Rua Francisco Degni, SPInstituto de Química de Araraquara, UNESP-Universidade Estadual Paulista, CP 355 Araraquara, Rua Francisco Degni, SPUniversidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (Unesp)Nogueira, André E.Lima, Alan R.F.Longo, Elson [UNESP]Leite, Edson R.Camargo, Emerson R.2018-12-11T17:25:36Z2018-12-11T17:25:36Z2015-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article55-63application/pdfhttp://dx.doi.org/10.1016/j.jphotochem.2015.07.012Journal of Photochemistry and Photobiology A: Chemistry, v. 312, p. 55-63.1010-6030http://hdl.handle.net/11449/17746510.1016/j.jphotochem.2015.07.0122-s2.0-849397846092-s2.0-84939784609.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Photochemistry and Photobiology A: Chemistry0,689info:eu-repo/semantics/openAccess2023-10-17T06:04:46Zoai:repositorio.unesp.br:11449/177465Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-17T06:04:46Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
title Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
spellingShingle Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
Nogueira, André E.
Bismuth titanate
Chemical synthesis
Optical properties
Photocatalysis
title_short Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
title_full Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
title_fullStr Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
title_full_unstemmed Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
title_sort Effect of lanthanum and lead doping on the microstructure and visible light photocatalysis of bismuth titanate prepared by the oxidant peroxide method (OPM)
author Nogueira, André E.
author_facet Nogueira, André E.
Lima, Alan R.F.
Longo, Elson [UNESP]
Leite, Edson R.
Camargo, Emerson R.
author_role author
author2 Lima, Alan R.F.
Longo, Elson [UNESP]
Leite, Edson R.
Camargo, Emerson R.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de São Carlos (UFSCar)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Nogueira, André E.
Lima, Alan R.F.
Longo, Elson [UNESP]
Leite, Edson R.
Camargo, Emerson R.
dc.subject.por.fl_str_mv Bismuth titanate
Chemical synthesis
Optical properties
Photocatalysis
topic Bismuth titanate
Chemical synthesis
Optical properties
Photocatalysis
description Pure (Bi<inf>12</inf>TiO<inf>20</inf>) and La- and Pb-doped (Bi<inf>12-x</inf>La<inf>x</inf>TiO<inf>20</inf> e Bi<inf>12-x</inf>Pb<inf>x</inf>TiO<inf>20</inf>, with x up to 1.50) bismuth titanates were prepared by the oxidant peroxide method (OPM) and used for photodegradation of rhodamine b (RhB). The synthesized materials samples were characterized by X-ray diffraction (XRD), UV-vis diffuse reflectance spectra (DRS), X-ray photoluminescence (PL) spectroscopy, scanning electron microscopy (SEM), X-ray fluorescence (XRF) and N<inf>2</inf> physical adsorption. Rietveld refinements showed samples consisting mainly of sillenite structure with small amounts of a perovskite secondary phase in the La- and Pb-doped materials. The photocatalytic properties of all materials were evaluated by the discoloration of RhB solution under ultraviolet (UV) and visible irradiation, where the bismuth titanate obtained by the OPM route showed higher photocatalytic activity than the commercial TiO<inf>2</inf>. Furthermore, it was observed that the insertion of different ions in the bismuth titanate structure changes the band gap energy in different ways, which consequently altered the photocatalytic activities of the materials.
publishDate 2015
dc.date.none.fl_str_mv 2015-11-01
2018-12-11T17:25:36Z
2018-12-11T17:25:36Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.jphotochem.2015.07.012
Journal of Photochemistry and Photobiology A: Chemistry, v. 312, p. 55-63.
1010-6030
http://hdl.handle.net/11449/177465
10.1016/j.jphotochem.2015.07.012
2-s2.0-84939784609
2-s2.0-84939784609.pdf
url http://dx.doi.org/10.1016/j.jphotochem.2015.07.012
http://hdl.handle.net/11449/177465
identifier_str_mv Journal of Photochemistry and Photobiology A: Chemistry, v. 312, p. 55-63.
1010-6030
10.1016/j.jphotochem.2015.07.012
2-s2.0-84939784609
2-s2.0-84939784609.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Photochemistry and Photobiology A: Chemistry
0,689
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 55-63
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1797789421110558720

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