Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
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. |
id |
UNSP_7e83a36b539c36b783d358ceebe2f35a |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/166005 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
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 |
|
_version_ |
1808129007839870976 |