Journal
MATERIALS LETTERS
Volume 163, Issue -, Pages 16-19Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2015.09.113
Keywords
Bi2WO6; Nanocrystalline materials; Rare earth; Doping; Functional; Photocatalyst
Funding
- National Natural Science Foundation of China [21477019, 51272299, 51473033]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT1221, T2011079]
- Project of the Shanghai Committee of Science and Technology [13JC1400300]
- Innovation Program of Shanghai Municipal Education Commission [13ZZ053]
- Fundamental Research Funds for the Central Universities
- DHU Distinguished Young Professor Program
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Bi2WO6 has attracted much attention as a visible-light-driven photocatalyst, but its photocatalytic activity should be further improved for future practical application. Herein, we prepared Yb3+/Er3+ codoped Bi2WO6 (Yb3+/Er3+-Bi2WO6) by a facile hydrothermal route followed by a calcination process. Yb3+/Er3+-Bi2WO6 sample consisted of two dimensional nanosheets with the thickness of about 50 nm and length of 1-2 mu m. Under visible light irradiation (lambda>400 nm), Yb3+/Er3+-Si2WO6 exhibited higher photocatalytic degradation efficiency (99.5%) for Rhodamine B than Er3+ doped Bi2WO6 (86.0%) and pure Bi2WO6 (14.7%) in 20 min. Furthermore, after four photodegradation cycles, there was no significant loss for the photocatalytic activity of the nanosheets. Therefore, Yb3+/Er3+-B12WO6 nanosheets can be used as an efficient and stable VLD photocatalyst. (C) 2015 Elsevier B.V. All rights reserved.
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