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Title: Fabrication of a magnetic nanocomposite photocatalysts Fe{sub 3}O{sub 4}@ZIF-67 for degradation of dyes in water under visible light irradiation

Abstract

As organic dyes are a major group of water pollutants, the development of materials for the removal of dyes is of great significance for the environment. Here, a novel flower-like Fe{sub 3}O{sub 4}@ZIF-67 photocatalyst was synthesized using a simple method at room temperature. It was found that the Fe{sub 3}O{sub 4}@ZIF-67 exhibited the ability of degrading Congo red (CR) quickly under visible light irradiation in a short time after adsorption equilibrium. Free radical trapping experiments revealed that the photo-induced active species superoxide radical (• O{sup 2−}) and holes (h{sup +}) were the predominant active species in the photocatalytic system. In addition, results demonstrated that the Fe{sub 3}O{sub 4}@ZIF-67 can be magnetically recycled, and maintain high photocatalytic activity after reuse over five cycles with no obvious decrease in the removal efficiency. It suggested that the synthesized material had a potentially promising application for CR removal from waste water. - Graphical abstract: A flower-like structure of ZIF-67 loaded with Fe{sub 3}O{sub 4} was synthesized by a facile method. It showed high photocatalysis activity that can degradate congo red (CR) completely in a short time. Display Omitted - Highlights: • A flower-like structure of ZIF-67 was synthesized. • It presents high photocatalytic activitymore » to CR. • The product could be collected conveniently by magnets.« less

Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
22742059
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 255; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CATALYSTS; DEMOCRATIC REPUBLIC OF THE CONGO; FERRITES; HYDROGEN IONS 1 PLUS; IRON OXIDES; IRRADIATION; MAGNETS; NANOSTRUCTURES; OXYGEN IONS; PHOTOCATALYSIS; REMOVAL; SUPEROXIDE RADICALS; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; VISIBLE RADIATION; WASTE WATER

Citation Formats

Guan, Weihua, Gao, Xuechuan, Ji, Guanfeng, Xing, Yongxing, Du, Chunfang, and Liu, Zhiliang. Fabrication of a magnetic nanocomposite photocatalysts Fe{sub 3}O{sub 4}@ZIF-67 for degradation of dyes in water under visible light irradiation. United States: N. p., 2017. Web. doi:10.1016/J.JSSC.2017.08.012.
Guan, Weihua, Gao, Xuechuan, Ji, Guanfeng, Xing, Yongxing, Du, Chunfang, & Liu, Zhiliang. Fabrication of a magnetic nanocomposite photocatalysts Fe{sub 3}O{sub 4}@ZIF-67 for degradation of dyes in water under visible light irradiation. United States. doi:10.1016/J.JSSC.2017.08.012.
Guan, Weihua, Gao, Xuechuan, Ji, Guanfeng, Xing, Yongxing, Du, Chunfang, and Liu, Zhiliang. Wed . "Fabrication of a magnetic nanocomposite photocatalysts Fe{sub 3}O{sub 4}@ZIF-67 for degradation of dyes in water under visible light irradiation". United States. doi:10.1016/J.JSSC.2017.08.012.
@article{osti_22742059,
title = {Fabrication of a magnetic nanocomposite photocatalysts Fe{sub 3}O{sub 4}@ZIF-67 for degradation of dyes in water under visible light irradiation},
author = {Guan, Weihua and Gao, Xuechuan and Ji, Guanfeng and Xing, Yongxing and Du, Chunfang and Liu, Zhiliang},
abstractNote = {As organic dyes are a major group of water pollutants, the development of materials for the removal of dyes is of great significance for the environment. Here, a novel flower-like Fe{sub 3}O{sub 4}@ZIF-67 photocatalyst was synthesized using a simple method at room temperature. It was found that the Fe{sub 3}O{sub 4}@ZIF-67 exhibited the ability of degrading Congo red (CR) quickly under visible light irradiation in a short time after adsorption equilibrium. Free radical trapping experiments revealed that the photo-induced active species superoxide radical (• O{sup 2−}) and holes (h{sup +}) were the predominant active species in the photocatalytic system. In addition, results demonstrated that the Fe{sub 3}O{sub 4}@ZIF-67 can be magnetically recycled, and maintain high photocatalytic activity after reuse over five cycles with no obvious decrease in the removal efficiency. It suggested that the synthesized material had a potentially promising application for CR removal from waste water. - Graphical abstract: A flower-like structure of ZIF-67 loaded with Fe{sub 3}O{sub 4} was synthesized by a facile method. It showed high photocatalysis activity that can degradate congo red (CR) completely in a short time. Display Omitted - Highlights: • A flower-like structure of ZIF-67 was synthesized. • It presents high photocatalytic activity to CR. • The product could be collected conveniently by magnets.},
doi = {10.1016/J.JSSC.2017.08.012},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 255,
place = {United States},
year = {2017},
month = {11}
}