Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating

Detalhes bibliográficos
Autor(a) principal: Lemos, Samantha C. S.
Data de Publicação: 2017
Outros Autores: Romeiro, Fernanda C., Paula, Leonardo F. de, Goncalves, Rosana F., Moura, Ana P. de [UNESP], Ferrer, Mateus M., Longo, Elson, Patrocinio, Antonio Otavio T., Lima, Renata C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jssc.2017.02.011
http://hdl.handle.net/11449/159499
Resumo: Regular sized nanostructures of indium oxide (In2O3) were homogeneously grown using a facile route, i.e. a microwave-hydrothermal method combined with rapid thermal treatment in a microwave oven. The presence of Er3+ doping plays an important role in controlling the formation of cubic (bcc) and rhombohedral (rh) In2O3 phases. The samples presented broad photoluminescent emission bands in the green-orange region, which were attributed to the recombination of electrons at oxygen vacancies. The photocatalytic activities of pure bcc-In2O3 and a bcc-rh-In2O3 mixture towards the UVA degradation of methylene blue (MB) were also evaluated. The results showed that Er+3 doped In2O3 exhibited the highest photocatalytic activity with a photonic efficiency three times higher than the pure oxide. The improved performance was attributed to the higher surface area, the greater concentration of electron traps due the presence of the dopant and the possible formation of heterojunctions between the cubic and rhombohedral phases.
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spelling Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heatingIndium oxideEarth rareMicrowave hydrothermalPhotoluminescencePhotocatalystRegular sized nanostructures of indium oxide (In2O3) were homogeneously grown using a facile route, i.e. a microwave-hydrothermal method combined with rapid thermal treatment in a microwave oven. The presence of Er3+ doping plays an important role in controlling the formation of cubic (bcc) and rhombohedral (rh) In2O3 phases. The samples presented broad photoluminescent emission bands in the green-orange region, which were attributed to the recombination of electrons at oxygen vacancies. The photocatalytic activities of pure bcc-In2O3 and a bcc-rh-In2O3 mixture towards the UVA degradation of methylene blue (MB) were also evaluated. The results showed that Er+3 doped In2O3 exhibited the highest photocatalytic activity with a photonic efficiency three times higher than the pure oxide. The improved performance was attributed to the higher surface area, the greater concentration of electron traps due the presence of the dopant and the possible formation of heterojunctions between the cubic and rhombohedral phases.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Univ Fed Uberlandia, Inst Quim, BR-38400902 Uberlandia, MG, BrazilUniv Fed Sao Paulo, UNIFESP, BR-09972270 Diadema, SP, BrazilUniv Estadual Paulista, Inst Quim, LIEC, BR-14800900 Araraquara, SP, BrazilUniv Fed Sao Carlos, INCTMN UFSCar, BR-13565905 Sao Carlos, SP, BrazilUniv Estadual Paulista, Inst Quim, LIEC, BR-14800900 Araraquara, SP, BrazilFAPEMIG: APQ-00988-13FAPEMIG: APQ-00330-14FAPEMIG: CEX - RED-00010-14Elsevier B.V.Universidade Federal de Uberlândia (UFU)Universidade Federal de São Paulo (UNIFESP)Universidade Estadual Paulista (Unesp)Universidade Federal de São Carlos (UFSCar)Lemos, Samantha C. S.Romeiro, Fernanda C.Paula, Leonardo F. deGoncalves, Rosana F.Moura, Ana P. de [UNESP]Ferrer, Mateus M.Longo, ElsonPatrocinio, Antonio Otavio T.Lima, Renata C.2018-11-26T15:44:03Z2018-11-26T15:44:03Z2017-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article58-63application/pdfhttp://dx.doi.org/10.1016/j.jssc.2017.02.011Journal Of Solid State Chemistry. San Diego: Academic Press Inc Elsevier Science, v. 249, p. 58-63, 2017.0022-4596http://hdl.handle.net/11449/15949910.1016/j.jssc.2017.02.011WOS:000398879700010WOS000398879700010.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Solid State Chemistry0,632info:eu-repo/semantics/openAccess2023-11-05T06:07:41Zoai:repositorio.unesp.br:11449/159499Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:57:23.930053Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
title Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
spellingShingle Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
Lemos, Samantha C. S.
Indium oxide
Earth rare
Microwave hydrothermal
Photoluminescence
Photocatalyst
title_short Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
title_full Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
title_fullStr Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
title_full_unstemmed Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
title_sort Effect of Er3+ ions on the phase formation and properties of In(2)O(3)nanostructures crystallized upon microwave heating
author Lemos, Samantha C. S.
author_facet Lemos, Samantha C. S.
Romeiro, Fernanda C.
Paula, Leonardo F. de
Goncalves, Rosana F.
Moura, Ana P. de [UNESP]
Ferrer, Mateus M.
Longo, Elson
Patrocinio, Antonio Otavio T.
Lima, Renata C.
author_role author
author2 Romeiro, Fernanda C.
Paula, Leonardo F. de
Goncalves, Rosana F.
Moura, Ana P. de [UNESP]
Ferrer, Mateus M.
Longo, Elson
Patrocinio, Antonio Otavio T.
Lima, Renata C.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Federal de Uberlândia (UFU)
Universidade Federal de São Paulo (UNIFESP)
Universidade Estadual Paulista (Unesp)
Universidade Federal de São Carlos (UFSCar)
dc.contributor.author.fl_str_mv Lemos, Samantha C. S.
Romeiro, Fernanda C.
Paula, Leonardo F. de
Goncalves, Rosana F.
Moura, Ana P. de [UNESP]
Ferrer, Mateus M.
Longo, Elson
Patrocinio, Antonio Otavio T.
Lima, Renata C.
dc.subject.por.fl_str_mv Indium oxide
Earth rare
Microwave hydrothermal
Photoluminescence
Photocatalyst
topic Indium oxide
Earth rare
Microwave hydrothermal
Photoluminescence
Photocatalyst
description Regular sized nanostructures of indium oxide (In2O3) were homogeneously grown using a facile route, i.e. a microwave-hydrothermal method combined with rapid thermal treatment in a microwave oven. The presence of Er3+ doping plays an important role in controlling the formation of cubic (bcc) and rhombohedral (rh) In2O3 phases. The samples presented broad photoluminescent emission bands in the green-orange region, which were attributed to the recombination of electrons at oxygen vacancies. The photocatalytic activities of pure bcc-In2O3 and a bcc-rh-In2O3 mixture towards the UVA degradation of methylene blue (MB) were also evaluated. The results showed that Er+3 doped In2O3 exhibited the highest photocatalytic activity with a photonic efficiency three times higher than the pure oxide. The improved performance was attributed to the higher surface area, the greater concentration of electron traps due the presence of the dopant and the possible formation of heterojunctions between the cubic and rhombohedral phases.
publishDate 2017
dc.date.none.fl_str_mv 2017-05-01
2018-11-26T15:44:03Z
2018-11-26T15:44:03Z
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.jssc.2017.02.011
Journal Of Solid State Chemistry. San Diego: Academic Press Inc Elsevier Science, v. 249, p. 58-63, 2017.
0022-4596
http://hdl.handle.net/11449/159499
10.1016/j.jssc.2017.02.011
WOS:000398879700010
WOS000398879700010.pdf
url http://dx.doi.org/10.1016/j.jssc.2017.02.011
http://hdl.handle.net/11449/159499
identifier_str_mv Journal Of Solid State Chemistry. San Diego: Academic Press Inc Elsevier Science, v. 249, p. 58-63, 2017.
0022-4596
10.1016/j.jssc.2017.02.011
WOS:000398879700010
WOS000398879700010.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Solid State Chemistry
0,632
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 58-63
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Web of Science
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
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