SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 53 ›› Issue (1): 222-231.DOI: 10.1016/j.cjche.2022.02.018

• Full Length Article • 上一篇    下一篇

Facile one-pot synthesis of a BiOBr/Bi2WO6 heterojunction with enhanced visible-light photocatalytic activity for tetracycline degradation

Duanlian Tang1, Xiaoyan Chen1, Jiayan Yan1, Zhuo Xiong1, Xiaoyu Lou1, Changshen Ye1, Jie Chen1,2, Ting Qiu1   

  1. 1. College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China;
    2. College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350108, China
  • 收稿日期:2021-10-18 修回日期:2022-01-11 出版日期:2023-01-28 发布日期:2023-04-08
  • 通讯作者: Jie Chen,E-mail:jiechen@fzu.edu.cn;Ting Qiu,E-mail:tingqiu@fzu.edu.cn
  • 基金资助:
    We greatly acknowledge the National Natural Science Foundation of China (Grant No. 22108040 and 21878054), the Natural Science Foundation of Fujian Province (2020J05130), Science and Technology Project of Fujian Educational Committee (JAT190051), and Research Project of Ningde Normal University (2019T03).

Facile one-pot synthesis of a BiOBr/Bi2WO6 heterojunction with enhanced visible-light photocatalytic activity for tetracycline degradation

Duanlian Tang1, Xiaoyan Chen1, Jiayan Yan1, Zhuo Xiong1, Xiaoyu Lou1, Changshen Ye1, Jie Chen1,2, Ting Qiu1   

  1. 1. College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China;
    2. College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350108, China
  • Received:2021-10-18 Revised:2022-01-11 Online:2023-01-28 Published:2023-04-08
  • Contact: Jie Chen,E-mail:jiechen@fzu.edu.cn;Ting Qiu,E-mail:tingqiu@fzu.edu.cn
  • Supported by:
    We greatly acknowledge the National Natural Science Foundation of China (Grant No. 22108040 and 21878054), the Natural Science Foundation of Fujian Province (2020J05130), Science and Technology Project of Fujian Educational Committee (JAT190051), and Research Project of Ningde Normal University (2019T03).

摘要: Photocatalytic removal of tetracycline (TC) from the wastewater is of great value in the chemical and environmental engineering field. Here, we introduced a facile one-step method for the synthesis of BiOBr/Bi2WO6 heterojunctions by using cheap CTAB as the Br source. We showed the possibility of our method to fine-tune the content of BiOBr in the produced BiOBr/Bi2WO6 by simply changing the dosage of cetyltrimethylammonium bromide (CTAB), providing a platform for the delicate tuning of the visible-light absorbance ability of the composites. With a suitable heterojunction structure of BiOBr/Bi2WO6-0.2, it exhibited an ultrarapid photocatalytic activity towards TC (20 mg·L-1), with a competitive removal efficiency of 88.1% within 60 min and an ultrahigh removal rate of 0.0349 min-1. It could also be robustly recycled for at least 5 cycles with slight removal efficiency loss. We demonstrated that this exciting photocatalytic performance was due to the highly decreased recombination of photoinduced electrons and holes on our composites by constructing this heterojunction structure, and the resulting OH and contributed to the effective degradation of TC to CO2.

关键词: BiOBr/Bi2WO6, Heterojunction, Visible light, Photocatalytic, Tetracycline

Abstract: Photocatalytic removal of tetracycline (TC) from the wastewater is of great value in the chemical and environmental engineering field. Here, we introduced a facile one-step method for the synthesis of BiOBr/Bi2WO6 heterojunctions by using cheap CTAB as the Br source. We showed the possibility of our method to fine-tune the content of BiOBr in the produced BiOBr/Bi2WO6 by simply changing the dosage of cetyltrimethylammonium bromide (CTAB), providing a platform for the delicate tuning of the visible-light absorbance ability of the composites. With a suitable heterojunction structure of BiOBr/Bi2WO6-0.2, it exhibited an ultrarapid photocatalytic activity towards TC (20 mg·L-1), with a competitive removal efficiency of 88.1% within 60 min and an ultrahigh removal rate of 0.0349 min-1. It could also be robustly recycled for at least 5 cycles with slight removal efficiency loss. We demonstrated that this exciting photocatalytic performance was due to the highly decreased recombination of photoinduced electrons and holes on our composites by constructing this heterojunction structure, and the resulting OH and contributed to the effective degradation of TC to CO2.

Key words: BiOBr/Bi2WO6, Heterojunction, Visible light, Photocatalytic, Tetracycline