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

Neris, A.M.; Schreiner, W.H.; Gonçalves, Charlie Salvador; Silva, Ubiratan Correia; Feitosa, Carlos Chesman de Araújo; Silva, Elson Longo da; Santos, I.M.G.

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

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dc.contributor.author	Neris, A.M.
dc.contributor.author	Schreiner, W.H.
dc.contributor.author	Gonçalves, Charlie Salvador
dc.contributor.author	Silva, Ubiratan Correia
dc.contributor.author	Feitosa, Carlos Chesman de Araújo
dc.contributor.author	Silva, Elson Longo da
dc.contributor.author	Santos, I.M.G.
dc.date.accessioned	2020-07-03T13:47:36Z
dc.date.available	2020-07-03T13:47:36Z
dc.date.issued	2018-03
dc.description.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 °C for 8 h, presented a discoloration of 76.3% after 16 h of exposure to UV light	pt_BR
dc.identifier.citation	NERIS, A.M.; SCHREINER, W.H.; GONÇALVES, C.S.; SILVA, U.C.; FEITISA, C.C.A.; LONGO, E.; SANTOS, I.M.G. Photocatalytic evaluation of the magnetic core@shell system (Co,Mn)Fe 2 O 4 @TiO 2 obtained by the modified Pechini method. Materials science and engineering: B, v. 229, p. 218-226, 2018. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0921510717303501?via%3Dihub. Acesso em: 26 maio 2020. https://doi.org/10.1016/j.mseb.2017.12.029.	pt_BR
dc.identifier.doi	10.1016/j.mseb.2017.12.029
dc.identifier.issn	0921-5107
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29426
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Core-shell	pt_BR
dc.subject	Anatase	pt_BR
dc.subject	(Co,Mn)Fe2O4@TiO2	pt_BR
dc.subject	Photocatalysis	pt_BR
dc.title	Photocatalytic evaluation of the magnetic core@shell system (Co,Mn)Fe2O4@TiO2 obtained by the modified Pechini method	pt_BR
dc.type	article	pt_BR