Journal
CERAMICS INTERNATIONAL
Volume 42, Issue 2, Pages 3154-3162Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2015.10.105
Keywords
Anion exchange; Bi2S3/Bi2WO6 composite; Heterostructure; Photocatalytic degradation; Rhodamine B
Categories
Funding
- National Natural Science Foundation of China [51202034]
Ask authors/readers for more resources
Bi2S3/Bi2WO6 semiconductor heterostructures with enhanced visible light photocatalytic activity were firstly prepared through a facile in-situ anion exchange approach at relatively low temperature, using thioacetamide as sulphur source and Bi2WO6 nanosheets as precursors. Bi2S3 nanoparticles decorated on the surface of 2D plate-like Bi2WO6 nanosheets were analyzed by using X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy etc. Photocatalytic experiments indicate that such Bi2S3/Bi2WO6 composites possess higher photocatalytic activity for the degradation of Rhodamine B under visible light irradiation in comparison with pure Bi2S3 or Bi2WO6. Among Bi2S3/Bi2WO6 composites with different contents of Bi2S3, the Bi2S3/Bi2WO6 composite with 30% Bi2S3 exhibits the highest photocatalytic efficiency. Based on the calculated energy band positions and photoluminescence spectrum, it was postulated that enhanced photocatalytic property could be ascribed to the reduction of the recombination rate of photogenerated electron-hole pairs and the heterojunction interface. Moreover, these results suggest that the heterostructured photocatalysts can be potentially applied in environmental protection and waste water treatment. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available