Novel ZnFe2O4/BC/ZnO Photocatalyst for High-efficiency Degradation of Tetracycline Under Visible Light Irradiation
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Academic Unit
College of Arts and Sciences
Publication Date
1-2023
Document Type
Article
Abstract
Developing broad-spectrum light reactions, effective charge separation, and easily recoverable photocatalysts were considered cost-effective pollution remediation methods. The ZnFe2O4/BC/ZnO composite was prepared to achieve these objectives, where biochar (BC) was used as a conductive channel and ZnFe2O4 as a magnetic substance. Among them, the 0.6-ZBO composite performed the best, with photocatalytic removal of tetracycline (TC) reaching 85.6%. The photocatalytic degradation rated constant of 0.6-ZBO composite was 23.36 × 10−3 min−1, which was 7.6, 4.1, and 2.5 times higher than that of ZnFe2O4/BC, ZnO, and ZnFe2O4/ZnO samples, respectively. According to several characterization data, it was demonstrated that successful Z-scheme heterojunctions were constructed between ZnFe2O4 and ZnO. The 0.6-ZBO complex increased the range of light absorption and strengthened the separation of electron-hole pairs, thus improving the redox ability of the complex. In the different water matrices, the stability of 0.6-ZBO was excellent and its ability to remove TC decreased slightly to about 11% after 5 cycles. This work provided a valuable approach to design a novel and efficient system for degrading organic pollutants in wastewater using magnetic biochar.
Volume
Chemosphere
DOI
https://doi.org/10.1016/j.chemosphere.2022.137041
Recommended Citation
Luo, Jinhua; Wu, Yaohui; Jiang, Mengzhu; Zhang, Aihua; Chen, Xiaoyong; Zeng, Yelin; Wang, Yonghong; Zhao, Yunlin; and Wang, Guangjun, "Novel ZnFe2O4/BC/ZnO Photocatalyst for High-efficiency Degradation of Tetracycline Under Visible Light Irradiation" (2023). Faculty Authors and Creators Reception. 121.
https://opus.govst.edu/fac/121