Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property

Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property

An ionic porous aromatic framework is developed as a self-degraded template to synthesize the magnetic heterostructure of γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O. The Fe<sub>3</sub>O<sub>4</sub> polyhedron...

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Autores principales: Man Xu, Kai Wang, Xuan Cao
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
porous aromatic framework
heterostructure
photocatalytic
ionic porous network
Organic chemistry
QD241-441
Acceso en línea:https://doaj.org/article/f787490fb617424db5a52e7a04407668
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spelling oai:doaj.org-article:f787490fb617424db5a52e7a044076682021-11-25T18:27:52ZIonic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property10.3390/molecules262268571420-3049https://doaj.org/article/f787490fb617424db5a52e7a044076682021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/22/6857https://doaj.org/toc/1420-3049An ionic porous aromatic framework is developed as a self-degraded template to synthesize the magnetic heterostructure of γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O. The Fe<sub>3</sub>O<sub>4</sub> polyhedron was obtained with the two-phase method first and then reacted with sodium tungstate to form the γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O hybrid nanostructure. Under the induction effect of the ionic porous network, the Fe<sub>3</sub>O<sub>4</sub> phase transformed to the γ-Fe<sub>2</sub>O<sub>3</sub> state and complexed with WO<sub>3</sub>·0.5H<sub>2</sub>O to form the n-n heterostructure with the n-type WO<sub>3</sub>·0.5H<sub>2</sub>O on the surface of n-type γ-Fe<sub>2</sub>O<sub>3</sub>. Based on a UV-Visible analysis, the magnetic photocatalyst was shown to have a suitable band gap for the catalytic degradation of organic pollutants. Under irradiation, the resulting γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O sample exhibited a removal efficiency of 95% for RhB in 100 min. The charge transfer mechanism was also studied. After the degradation process, the dispersed powder can be easily separated from the suspension by applying an external magnetic field. The catalytic activity displayed no significant decrease after five recycles. The results present new insights for preparing a hybrid nanostructure photocatalyst and its potential application in harmful pollutant degradation.Man XuKai WangXuan CaoMDPI AGarticleporous aromatic frameworkheterostructurephotocatalyticionic porous networkOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6857, p 6857 (2021)
institution DOAJ
collection DOAJ
language EN
topic porous aromatic framework
heterostructure
photocatalytic
ionic porous network
Organic chemistry
QD241-441
spellingShingle porous aromatic framework
heterostructure
photocatalytic
ionic porous network
Organic chemistry
QD241-441
Man Xu
Kai Wang
Xuan Cao
Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property
description An ionic porous aromatic framework is developed as a self-degraded template to synthesize the magnetic heterostructure of γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O. The Fe<sub>3</sub>O<sub>4</sub> polyhedron was obtained with the two-phase method first and then reacted with sodium tungstate to form the γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O hybrid nanostructure. Under the induction effect of the ionic porous network, the Fe<sub>3</sub>O<sub>4</sub> phase transformed to the γ-Fe<sub>2</sub>O<sub>3</sub> state and complexed with WO<sub>3</sub>·0.5H<sub>2</sub>O to form the n-n heterostructure with the n-type WO<sub>3</sub>·0.5H<sub>2</sub>O on the surface of n-type γ-Fe<sub>2</sub>O<sub>3</sub>. Based on a UV-Visible analysis, the magnetic photocatalyst was shown to have a suitable band gap for the catalytic degradation of organic pollutants. Under irradiation, the resulting γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O sample exhibited a removal efficiency of 95% for RhB in 100 min. The charge transfer mechanism was also studied. After the degradation process, the dispersed powder can be easily separated from the suspension by applying an external magnetic field. The catalytic activity displayed no significant decrease after five recycles. The results present new insights for preparing a hybrid nanostructure photocatalyst and its potential application in harmful pollutant degradation.
format article
author Man Xu
Kai Wang
Xuan Cao
author_facet Man Xu
Kai Wang
Xuan Cao
author_sort Man Xu
title Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property
title_short Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property
title_full Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property
title_fullStr Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property
title_full_unstemmed Ionic Porous Aromatic Framework as a Self-Degraded Template for the Synthesis of a Magnetic γ-Fe<sub>2</sub>O<sub>3</sub>/WO<sub>3</sub>·0.5H<sub>2</sub>O Hybrid Nanostructure with Enhanced Photocatalytic Property
title_sort ionic porous aromatic framework as a self-degraded template for the synthesis of a magnetic γ-fe<sub>2</sub>o<sub>3</sub>/wo<sub>3</sub>·0.5h<sub>2</sub>o hybrid nanostructure with enhanced photocatalytic property
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/f787490fb617424db5a52e7a04407668
work_keys_str_mv AT manxu ionicporousaromaticframeworkasaselfdegradedtemplateforthesynthesisofamagneticgfesub2subosub3subwosub3sub05hsub2subohybridnanostructurewithenhancedphotocatalyticproperty
AT kaiwang ionicporousaromaticframeworkasaselfdegradedtemplateforthesynthesisofamagneticgfesub2subosub3subwosub3sub05hsub2subohybridnanostructurewithenhancedphotocatalyticproperty
AT xuancao ionicporousaromaticframeworkasaselfdegradedtemplateforthesynthesisofamagneticgfesub2subosub3subwosub3sub05hsub2subohybridnanostructurewithenhancedphotocatalyticproperty
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