Citation: Zeqing Long, Guang Xian, Guangming Zhang, Tao Zhang, Xuemei Li. BiOCl-Bi₁₂O₁₇Cl₂ nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical[J]. Chinese Journal of Catalysis, ;2020, 41(3): 464-473. doi: S1872-2067(19)63474-1 shu

BiOCl-Bi₁₂O₁₇Cl₂ nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical

School of Environment&Natural Resources, Renmin University of China, Beijing 100872, China

Received Date: 14 June 2019
Revised Date: 2 August 2019

Fund Project: This work was supported by National Water Pollution Control and Treatment Science and Technology Major Project (2018ZX07110003) and Key Research and Development Project of Shandong Province (2018CXGC1007).

A BiOCl-Bi₁₂O₁₇Cl₂ nanocomposite with a high visible-light response and a low photoinduced electron-hole pair recombination rate was successfully synthesized using an ultrasonic-hydrothermal method. The texture, structure, optical, and photocatalytic properties of the composite were characterized. The results showed that the composite had a sheet flower-like structure with a large specific surface area. Ultraviolet-visible diffuse reflection spectra and photoluminescence spectra showed that the composite had an excellent visible-light response and a low recombination rate of photoinduced electron hole pairs. The photocatalytic property of the composite was evaluated by the removal efficiency of rhodamine B and ciprofloxacin under visible-light illumination. The composite's reaction rate constant of removing rhodamine B (/ciprofloxacin) was approximately 8.14 (/4.94), 42.63 (/11.91) and 64.66 (/36.07) times that of Bi₁₂O₁₇Cl₂, P25, and BiOCl, respectively. Furthermore, the composite showed a wide applicable pH range and excellent reusability. Mechanism analysis showed that photogenerated holes played a dominant role and ·O₂^- also contributed to photocatalytic degradation. In summary, this study presents a high-efficiency photocatalyst for wastewater treatment.
- BiOCl-Bi₁₂O₁₇Cl₂,
- Nanocomposite,
- Green technology,
- Visible-light photocatalysis
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BiOCl-Bi12O17Cl2 nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical

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通讯作者: 陈斌, bchen63@163.com

BiOCl-Bi₁₂O₁₇Cl₂ nanocomposite with high visible-light photocatalytic activity prepared by an ultrasonic hydrothermal method for removing dye and pharmaceutical