Preparation of 2D square-like Bi2S3-BiOCl heterostructures with enhanced visible light-driven photocatalytic performance for dye pollutant degradation

Jing-jing Xu; Jing-wen Yang; Pu Zhang; Quan Yuan; Yan-hong Zhu; Yu Wang; Miao-miao Wu; Zheng-mei Wang; Min-dong Chen

doi:10.1016/j.wse.2017.12.010

Water Science and Engineering (Oct 2017)

Preparation of 2D square-like Bi2S3-BiOCl heterostructures with enhanced visible light-driven photocatalytic performance for dye pollutant degradation

Jing-jing Xu,
Jing-wen Yang,
Pu Zhang,
Quan Yuan,
Yan-hong Zhu,
Yu Wang,
Miao-miao Wu,
Zheng-mei Wang,
Min-dong Chen

Affiliations

Jing-jing Xu: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Jing-wen Yang: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Pu Zhang: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Quan Yuan: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Yan-hong Zhu: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Yu Wang: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Miao-miao Wu: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Zheng-mei Wang: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China
Min-dong Chen: Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China

DOI: https://doi.org/10.1016/j.wse.2017.12.010
Journal volume & issue: Vol. 10, no. 4
pp. 334 – 339

Abstract

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A series of Bi2S3-BiOCl composites with two-dimensional (2D) square-like structures were prepared via a two-step anion exchange route. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and diffuse reflectance spectra (DRS) were used to investigate the properties of the as-prepared Bi2S3-BiOCl heterostructures. The coupling of BiOCl and Bi2S3 induced enhanced photoabsorption efficiency and bandgap narrowing. A reactive brilliant red X-3B dye was used as a contaminant to test the photocatalytic activity of the obtained Bi2S3-BiOCl samples under visible light irradiation. The sample Bi2S3-BiOCl with a mass ratio of 8:4 exhibited the highest photodegradation efficiency, which was six times higher than that of pure BiOCl. In addition, a mechanism for the enhancement of photocatalytic activity is proposed.

Published in Water Science and Engineering

ISSN: 1674-2370 (Print); 2405-8106 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Hydraulic engineering: River, lake, and water-supply engineering (General)
Website: https://www.journals.elsevier.com/water-science-and-engineering/

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