Novel La-doped Bi2WO6 photocatalysts with enhanced visible-light photocatalytic activity

Novel La-doped Bi2WO6 photocatalysts with enhanced visible-light photocatalytic activity Novel La-doped Bi2WO6 composites were successfully prepared via a facile solvothermal method and well characterized by X-ray diffraction, Brunner−Emmet−Teller measurements, scanning electron microscopy, transmission electron microscopy/high-resolution, energy dispersive spectrometry, X-ray photoelectron spectroscopy, ultraviolet–visible spectroscopy, and Fourier transform infrared spectroscopy. The photocatalytic activity of modified catalysts was evaluated by degrading tetracycline hydrochloride under visible light (450 W Xe lamp irradiation). It was found 5%La-Bi2WO6 had the highest light-absorption ability, great morphology, and microstructures. The La dopant enlarged surface area and increased crystal defects, which may enhance the optical absorption activity and inhibit the recombination of the photo-generated charge carrier, respectively. After 150 min illumination, the photocatalysts that 5%La-Bi2WO6 and pure Bi2WO6 exhibited the best and worst photocatalytic performance, respectively (96.25% vs. 88.92%). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Sol-Gel Science and Technology Springer Journals

Novel La-doped Bi2WO6 photocatalysts with enhanced visible-light photocatalytic activity

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Publisher
Springer US
Copyright
Copyright © 2018 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Inorganic Chemistry; Optical and Electronic Materials; Nanotechnology
ISSN
0928-0707
eISSN
1573-4846
D.O.I.
10.1007/s10971-018-4683-1
Publisher site
See Article on Publisher Site

Abstract

Novel La-doped Bi2WO6 composites were successfully prepared via a facile solvothermal method and well characterized by X-ray diffraction, Brunner−Emmet−Teller measurements, scanning electron microscopy, transmission electron microscopy/high-resolution, energy dispersive spectrometry, X-ray photoelectron spectroscopy, ultraviolet–visible spectroscopy, and Fourier transform infrared spectroscopy. The photocatalytic activity of modified catalysts was evaluated by degrading tetracycline hydrochloride under visible light (450 W Xe lamp irradiation). It was found 5%La-Bi2WO6 had the highest light-absorption ability, great morphology, and microstructures. The La dopant enlarged surface area and increased crystal defects, which may enhance the optical absorption activity and inhibit the recombination of the photo-generated charge carrier, respectively. After 150 min illumination, the photocatalysts that 5%La-Bi2WO6 and pure Bi2WO6 exhibited the best and worst photocatalytic performance, respectively (96.25% vs. 88.92%).

Journal

Journal of Sol-Gel Science and TechnologySpringer Journals

Published: May 17, 2018

References

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