Citation: HE Yun-Peng, JIN Xue-Yang, LI Wen-Zhuo, YANG Shui-Jin, LÜ Bao-Lan. Synthesis and Photocatalytic Properties of Bi₂WO₆/UiO-66 Composite[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(6): 996-1004. doi: 10.11862/CJIC.2019.135 shu

Synthesis and Photocatalytic Properties of Bi₂WO₆/UiO-66 Composite

College of Chemistry and Chemical Engineering, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Hubei Normal University, Huangshi, Hubei 435002, China

Corresponding author: YANG Shui-Jin, yangshuijin@hbnu.edu.cn LÜ Bao-Lan, lu.bl@163.com
Received Date: 28 December 2018
Revised Date: 8 April 2019

Figures(11)

A composite photocatalyst Bi₂WO₆/UiO-66 was prepared by hydrothermal method. The effect of template glacial acetic acid (CH₃COOH) on the morphology of UiO-66 and the effects of different molar ratios of Bi and Zr on the photocatalytic performance of the composite were investigated. XRD, SEM, N₂ adsorption-desorption, UV-Vis DRS and XPS were used to characterize the phase, morphology, specific surface area, optical absorption performance and element composition of the catalyst. The experimental results show that when n_Bi:n_Zr=2:1, the photocatalytic activity of RhB by Bi₂WO₆/UiO-66 is the highest. The relative concentration of RhB decreased 98.5% after 50 minutes of visible light irradiation. After five recycling experiments, there was no significant decrease in photocatalytic activity, but the photocatalytic activity of pure Bi₂WO₆ decreased greatly, which indicated that the stability of the complex is higher than that of pure Bi₂WO₆. According to free radical trapping experiments, it is proved that holes (h⁺) play an important role in photocatalysis. The reasons for the improvement of photocatalytic activity were further explained by electrochemical test. The band gap and valence band position of the material were obtained by UV-Vis DRS and VB-XPS, and the possible photocatalysis mechanism was put forward.
- Bi₂WO₆,
- UiO-66,
- composite,
- photocatalysis
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Synthesis and Photocatalytic Properties of Bi₂WO₆/UiO-66 Composite