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Journal of Sol-Gel Science and Technology

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17-05-2018 | Original Paper: Nano-structured materials (particles, fibers, colloids, composites, etc.)

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

Authors: Fengjun Zhang, Rui Sun, Risheng Li, Ningning Song, Limin Feng, Shuang Zhong, Zhiqing Zhao

Published in: Journal of Sol-Gel Science and Technology | Issue 3/2018

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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%).

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Title: Novel La-doped Bi2WO6 photocatalysts with enhanced visible-light photocatalytic activity
Authors: Fengjun Zhang
Rui Sun
Risheng Li
Ningning Song
Limin Feng
Shuang Zhong
Zhiqing Zhao
Publication date: 17-05-2018
Publisher: Springer US
Published in: Journal of Sol-Gel Science and Technology / Issue 3/2018
Print ISSN: 0928-0707
Electronic ISSN: 1573-4846
DOI: https://doi.org/10.1007/s10971-018-4683-1

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