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Preparation and photocatalytic application of AgBr modified Bi2WO6 nanosheets with high adsorption capacity

Published online by Cambridge University Press:  06 November 2018

Peng Zhang Open the ORCID record for Peng Zhang [Opens in a new window] ,
Zhiyuan Dong ,
Yuanming Ran ,
Hualin Xie ,
Yun Lu  and
Shimin Ding
Peng Zhang
Affiliation:
College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China; and Helmholtz-Zentrum Berlin for Materials and Energy, Institute of Applied Materials, Berlin 14109, Germany
Zhiyuan Dong
Affiliation:
College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China
Yuanming Ran
Affiliation:
College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China
Hualin Xie*
Affiliation:
College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China
Yun Lu
Affiliation:
College of Mechanical Engineering & Graduate School, Chiba University, Chiba 263-8522, Japan
Shimin Ding
Affiliation:
Collaborative Innovation Center for Green Development in Wuling Mountain Areas, Yangtze Normal University, Chongqing 408100, China
*
a)Address all correspondence to this author. e-mail: hualinxie@163.com
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Abstract

AgBr-modified Bi2WO6 nanosheets were successfully synthesized using a CTAB-assisted hydrothermal method followed by a facile deposition–precipitation procedure. The as-prepared photocatalysts were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), Brunauer–Emmett–Teller (BET), and photoluminescence emission spectroscopy (PL). AgBr nanoparticles were found evenly distributed on the surface of the Bi2WO6 nanosheets. The AgBr/Bi2WO6 nanocomposite demonstrated enhanced pollutant decolorization efficiency in eliminating Rhodamine B (RhB), methyl orange (MO), and phenol aqueous solutions under simulated solar light irradiation. It has been noticed that the adsorption performance of both Bi2WO6 nanosheets and AgBr-modified Bi2WO6 nanosheets played a more important role in the decolorization of pollutants, such as RhB and MO, than their photocatalytic ability. The high adsorption efficiency of the photocatalysts was mainly attributed to the increased surface area and the exposed reactive facets of the materials.

Keywords

adsorptionAgBr/Bi2WO6photocatalystdecolorization
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 23 , 14 December 2018 , pp. 3953 - 3962
Copyright
Copyright © Materials Research Society 2018 

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