Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions

Abstract Corn-like, γ-Fe2O3@SiO2@TiO2 core/shell heterostructures were synthesized by a modified solvothermal reduction combined with a sol-gel method. SiO2 shells were first deposited on monodisperse Fe3O4 microspheres by a sol-gel method. Fe3O4@SiO2@TiO2 corn-like heterostructures were then obtain...

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Autores principales:	Fang Wang, Manhong Li, Lifang Yu, Fan Sun, Zhuliang Wang, Lifang Zhang, Hao Zeng, Xiaohong Xu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4d7fecf6f0904a2985f23322e2b32d86
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spelling	oai:doaj.org-article:4d7fecf6f0904a2985f23322e2b32d862021-12-02T15:05:31ZCorn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions10.1038/s41598-017-07417-z2045-2322https://doaj.org/article/4d7fecf6f0904a2985f23322e2b32d862017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07417-zhttps://doaj.org/toc/2045-2322Abstract Corn-like, γ-Fe2O3@SiO2@TiO2 core/shell heterostructures were synthesized by a modified solvothermal reduction combined with a sol-gel method. SiO2 shells were first deposited on monodisperse Fe3O4 microspheres by a sol-gel method. Fe3O4@SiO2@TiO2 corn-like heterostructures were then obtained by sequential TiO2 coating, during which the magnetic dipolar interactions induced the anisotropic self-assembly process. After annealing at 350 °C, the crystalized TiO2 enhanced photocatalytic activity, while Fe3O4 was converted to γ-Fe2O3. The corn-like γ-Fe2O3@SiO2@TiO2 photocatalyst can be recycled and reused by magnet extraction. Despite the photocatalytic activity decreased with each cycle, it can be completely recovered by moderate heating at 200 °C.Fang WangManhong LiLifang YuFan SunZhuliang WangLifang ZhangHao ZengXiaohong XuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fang Wang Manhong Li Lifang Yu Fan Sun Zhuliang Wang Lifang Zhang Hao Zeng Xiaohong Xu Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions
description	Abstract Corn-like, γ-Fe2O3@SiO2@TiO2 core/shell heterostructures were synthesized by a modified solvothermal reduction combined with a sol-gel method. SiO2 shells were first deposited on monodisperse Fe3O4 microspheres by a sol-gel method. Fe3O4@SiO2@TiO2 corn-like heterostructures were then obtained by sequential TiO2 coating, during which the magnetic dipolar interactions induced the anisotropic self-assembly process. After annealing at 350 °C, the crystalized TiO2 enhanced photocatalytic activity, while Fe3O4 was converted to γ-Fe2O3. The corn-like γ-Fe2O3@SiO2@TiO2 photocatalyst can be recycled and reused by magnet extraction. Despite the photocatalytic activity decreased with each cycle, it can be completely recovered by moderate heating at 200 °C.
format	article
author	Fang Wang Manhong Li Lifang Yu Fan Sun Zhuliang Wang Lifang Zhang Hao Zeng Xiaohong Xu
author_facet	Fang Wang Manhong Li Lifang Yu Fan Sun Zhuliang Wang Lifang Zhang Hao Zeng Xiaohong Xu
author_sort	Fang Wang
title	Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions
title_short	Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions
title_full	Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions
title_fullStr	Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions
title_full_unstemmed	Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions
title_sort	corn-like, recoverable γ-fe2o3@sio2@tio2 photocatalyst induced by magnetic dipole interactions
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/4d7fecf6f0904a2985f23322e2b32d86
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Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions

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