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Construction of magnetic BiOBr@Fe3O4 hybrid nanoparticles via a sol-gel route for photocatalysis application

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Title Construction of magnetic BiOBr@Fe3O4 hybrid nanoparticles via a sol-gel route for photocatalysis application
 
Creator Song, Yunfeng
Zhang, Dongfang
Wang, Jiaxun
 
Subject Fe3O4
Magnetic
Photocatalytic
Recycle
Separable
 
Description 663-673
Development of a highly active visible-light-driven and magnetically recyclable photocatalyst is a challenge for chemical
use of solar energy. In this study, Fe3O4 nanoparticles (NP), BiOBr and a superior magnetic separable BiOBr@Fe3O4 hybrid
material have been synthesized via a facile chemical method. The structures, morphological, optical and physical properties
of as-synthesized samples have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM),
ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy (XPS), Fourier transforminfrared
(FT-IR) spectroscopy, photoluminescence (PL) spectroscopy. The photocatalytic activity of the as-synthesized
materials is evaluated by photocatalytic degradation of aromatic, heterocyclic organic compound such as methylene blue
(MB) and 85% of MB could be removed by BiOBr@Fe3O4 hybrid within 60 min. It is found that the composite yield a
significantly larger amount of hydroxyl radicals through free radical scavenging test. It is proposed that the observed
synergistic effect between Fe3O4 and BiOBr is due to the charge transfer between the two oxides, improving the separation
of the photogenerated charge carriers via the Z-scheme mechanism, and thus accelerating the photocatalytic degradation of
MB and leading to high photocatalytic stability of BiOBr@Fe3O4 material.
 
Date 2022-02-02T12:01:34Z
2022-02-02T12:01:34Z
2021-11
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/59055
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.28(6) [November 2021]