Facile synthesis of Ni-doping Bi₂WO₆ nano-sheets with enhanced adsorptive and visible-light photocatalytic performances

Lei XIANG, Lei CHEN, Ce-Hui MO, Lian-Ming ZHENG, Zhong-Xiong YU, Yan-Wen LI, Quan-Ying CAI, Hui LI, Wei-Dong YANG, Dong-Mei ZHOU, Ming Hung WONG

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3 Citations (Scopus)

Abstract

Bi₂WO₆ nano-sheets doped with various amounts of nickel (Ni) were prepared by hydrothermal method, and their microstructure and photocatalytic performance for degrading rhodamine B (RhB) and ciprofloxacin (CIP) under simulated solar light irradiation were investigated. The effective incorporation of Ni atoms in Bi₂WO₆ was confirmed by energy-dispersive spectroscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. Ni-doping decreased the crystallite size of Bi₂WO₆ and improved its specific surface area and surface electrical property. Furthermore, Ni atoms acting as electron traps facilitated the separation of photo electron–hole pairs. Accordingly, both adsorptive and photocatalytic performances of the Ni–Bi₂WO₆ were improved compared to undoping Bi₂WO₆. The 0.15-Ni–Bi₂WO₆ (Ni/W, molar ratio) displayed the best adsorptive and photocatalytic activities among the Bi₂WO₆ samples doped with various elements. The photogenerated holes were the predominant reactive species responsible for the photodegradation of RhB by 0.15-Ni–Bi₂WO₆. Solution pH could influence the adsorptive and photocatalytic performances of 0.15-Ni–Bi₂WO₆ with the best performances under acidic condition. Copyright © 2018 Springer Science+Business Media, LLC.

Original languageEnglish
Pages (from-to)7657-7671
JournalJournal of Materials Science
Volume53
Issue number10
Early online date01 Feb 2018
Publication statusPublished - May 2018

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Nickel
rhodamine B
Doping (additives)
Atoms
Electron traps
Photodegradation
Ciprofloxacin
Crystallite size
Specific surface area
Fourier transform infrared spectroscopy
Raman spectroscopy
Energy dispersive spectroscopy
Electric properties
X ray photoelectron spectroscopy
Irradiation
Microstructure
Industry

Citation

Xiang, L., Chen, L., Mo, C.-H., Zheng, L.-M., Yu, Z.-X., Li, Y.-W., . . . Wong, M.-H. (2018). Facile synthesis of Ni-doping Bi₂WO₆ nano-sheets with enhanced adsorptive and visible-light photocatalytic performances. Journal of Materials Science, 53(10), 7657-7671.