Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method

Detalhes bibliográficos
Autor(a) principal: Neris, A. M.
Data de Publicação: 2018
Outros Autores: Schreiner, W. H., Salvador, C., Silva, U. C., Chesman, C., Longo, E. [UNESP], Santos, I. M. G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.mseb.2017.12.029
http://hdl.handle.net/11449/166005
Resumo: TiO2 is a highly active photocatalyst, sometimes obtained with nanometric particle size, which improves its behavior but makes its removal from aqueous media more difficult. To avoid this drawback, this work aims to obtain a photocatalyst easily removable from aqueous media using magnetism. The core@shell system (Co,Mn) Fe2O4@TiO2 was prepared by adding commercial (Co,Mn)Fe2O4 nanoparticles to the titanium polymeric resin synthesized by the modified Pechini method. Optimization of photocatalyst properties was achieved by variation of the TiO2:ferrite ratio, synthesis temperature and time, followed by their evaluation in photodegradation of an azo dye. The highest efficiency was attained when anatase was the major crystalline phase, whereas TiO2:ferrite ratio was limited to 90% to retain the magnetic properties, which enabled its removal from aqueous media using simple magnets. The system (Co,Mn)Fe2O4@TiO2, synthesized with 90% TiO2 and calcined at 500 degrees C for 8 h, presented a discoloration of 76.3% after 16 h of exposure to UV light.
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spelling Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini methodCore-shellAnatase(Co,Mn)Fe2O4@TiO2PhotocatalysisTiO2 is a highly active photocatalyst, sometimes obtained with nanometric particle size, which improves its behavior but makes its removal from aqueous media more difficult. To avoid this drawback, this work aims to obtain a photocatalyst easily removable from aqueous media using magnetism. The core@shell system (Co,Mn) Fe2O4@TiO2 was prepared by adding commercial (Co,Mn)Fe2O4 nanoparticles to the titanium polymeric resin synthesized by the modified Pechini method. Optimization of photocatalyst properties was achieved by variation of the TiO2:ferrite ratio, synthesis temperature and time, followed by their evaluation in photodegradation of an azo dye. The highest efficiency was attained when anatase was the major crystalline phase, whereas TiO2:ferrite ratio was limited to 90% to retain the magnetic properties, which enabled its removal from aqueous media using simple magnets. The system (Co,Mn)Fe2O4@TiO2, synthesized with 90% TiO2 and calcined at 500 degrees C for 8 h, presented a discoloration of 76.3% after 16 h of exposure to UV light.Brazilian Funding Agency CT-INFRA/FINEP/MCTICCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Brazilian Funding Agency FAPERNFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Fed Paraiba, Nucleo Pesquisa & Extensao, Lab Combust & Mat, Joao Pessoa, PB, BrazilUniv Fed Parana, Lab Supeificies & Interfaces, Curitiba, PR, BrazilUniv Fed Paraiba, Dept Fis, Joao Pessoa, PB, BrazilUniv Fed Rio Grande do Norte, Dept Fis, Natal, RN, BrazilUniv Estadual Paulista, Ctr Desenvolvimento Mat Funcionais, Lab Interdisciplinar Eletroquim & Ceram, Araraquara, SP, BrazilUniv Estadual Paulista, Ctr Desenvolvimento Mat Funcionais, Lab Interdisciplinar Eletroquim & Ceram, Araraquara, SP, BrazilElsevier B.V.Univ Fed ParaibaUniv Fed ParanaUniv Fed Rio Grande do NorteUniversidade Estadual Paulista (Unesp)Neris, A. M.Schreiner, W. H.Salvador, C.Silva, U. C.Chesman, C.Longo, E. [UNESP]Santos, I. M. G.2018-11-29T07:11:41Z2018-11-29T07:11:41Z2018-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article218-226application/pdfhttp://dx.doi.org/10.1016/j.mseb.2017.12.029Materials Science And Engineering B-advanced Functional Solid-state Materials. Amsterdam: Elsevier Science Bv, v. 229, p. 218-226, 2018.0921-5107http://hdl.handle.net/11449/16600510.1016/j.mseb.2017.12.029WOS:000424962300027WOS000424962300027.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Science And Engineering B-advanced Functional Solid-state Materials0,779info:eu-repo/semantics/openAccess2023-11-28T06:18:40Zoai:repositorio.unesp.br:11449/166005Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:59:06.303022Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
title Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
spellingShingle Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
Neris, A. M.
Core-shell
Anatase
(Co,Mn)Fe2O4@TiO2
Photocatalysis
title_short Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
title_full Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
title_fullStr Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
title_full_unstemmed Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
title_sort Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
author Neris, A. M.
author_facet Neris, A. M.
Schreiner, W. H.
Salvador, C.
Silva, U. C.
Chesman, C.
Longo, E. [UNESP]
Santos, I. M. G.
author_role author
author2 Schreiner, W. H.
Salvador, C.
Silva, U. C.
Chesman, C.
Longo, E. [UNESP]
Santos, I. M. G.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Univ Fed Paraiba
Univ Fed Parana
Univ Fed Rio Grande do Norte
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Neris, A. M.
Schreiner, W. H.
Salvador, C.
Silva, U. C.
Chesman, C.
Longo, E. [UNESP]
Santos, I. M. G.
dc.subject.por.fl_str_mv Core-shell
Anatase
(Co,Mn)Fe2O4@TiO2
Photocatalysis
topic Core-shell
Anatase
(Co,Mn)Fe2O4@TiO2
Photocatalysis
description TiO2 is a highly active photocatalyst, sometimes obtained with nanometric particle size, which improves its behavior but makes its removal from aqueous media more difficult. To avoid this drawback, this work aims to obtain a photocatalyst easily removable from aqueous media using magnetism. The core@shell system (Co,Mn) Fe2O4@TiO2 was prepared by adding commercial (Co,Mn)Fe2O4 nanoparticles to the titanium polymeric resin synthesized by the modified Pechini method. Optimization of photocatalyst properties was achieved by variation of the TiO2:ferrite ratio, synthesis temperature and time, followed by their evaluation in photodegradation of an azo dye. The highest efficiency was attained when anatase was the major crystalline phase, whereas TiO2:ferrite ratio was limited to 90% to retain the magnetic properties, which enabled its removal from aqueous media using simple magnets. The system (Co,Mn)Fe2O4@TiO2, synthesized with 90% TiO2 and calcined at 500 degrees C for 8 h, presented a discoloration of 76.3% after 16 h of exposure to UV light.
publishDate 2018
dc.date.none.fl_str_mv 2018-11-29T07:11:41Z
2018-11-29T07:11:41Z
2018-03-01
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.mseb.2017.12.029
Materials Science And Engineering B-advanced Functional Solid-state Materials. Amsterdam: Elsevier Science Bv, v. 229, p. 218-226, 2018.
0921-5107
http://hdl.handle.net/11449/166005
10.1016/j.mseb.2017.12.029
WOS:000424962300027
WOS000424962300027.pdf
url http://dx.doi.org/10.1016/j.mseb.2017.12.029
http://hdl.handle.net/11449/166005
identifier_str_mv Materials Science And Engineering B-advanced Functional Solid-state Materials. Amsterdam: Elsevier Science Bv, v. 229, p. 218-226, 2018.
0921-5107
10.1016/j.mseb.2017.12.029
WOS:000424962300027
WOS000424962300027.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Science And Engineering B-advanced Functional Solid-state Materials
0,779
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 218-226
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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