Synergistic Adsorption-photocatalytic Activity using Z-Scheme Based Magnetic ZnFe2O4/CuWO4 Heterojunction for Tetracycline Removal
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Academic Unit
College of Arts and Sciences
Publication Date
7-2022
Document Type
Article
Abstract
Developing efficient and economical photocatalysts was considered as an efficient and economical strategy for pollution remediation. Herein, magnetically separable ZnFe2O4/CuWO4 composites (ZW) had been developed via combining ZnFe2O4 with CuWO4. The composite with a mass ratio of 40% CuWO4 (ZW-40) performed best, and the tetracycline hydrochloride (TC) removal by adsorption-photocatalysis of ZW-40 reached 86.5%. The photocatalytic degradation rated constant of it was 9.44 × 10−3 min−1, which was approximately 5.04 and 3.28 times compared to the ZnFe2O4 and CuWO4 samples, respectively. Pseudo-second-order kinetic models could describe well the TC adsorption process, in which chemisorption was the major driving factor, with the maximum adsorption at 23.56 mg g−1. The improved photo-catalytic capability owed to the formation of Z-scheme heterojunctions with ZnFe2O4 and CuWO4, which improved the intensity of visible light absorption and enhanced the separation electron-hole pairs as well as the redox capability of the composite. ZW-40 was high stability as its removal ability of TC in different water conditions slightly dropped about 15% after 5 cycles. ZW-40 could effectively remove TC in different water matrix, its removal ability for 40 mg/L was as follows: super-pure water> municipal wastewater> swine farm wastewater. Hence, the complexation of ZnFe2O4 with CuWO4 provides a valuable strategy to improve the photocatalytic potential for ZnFe2O4-based catalysts as well as providing a promising pathway for water clarification.
Journal Title
Journal of Alloys and Compounds
Volume
910
DOI
https://doi.org/10.1016/j.jallcom.2022.164954
Recommended Citation
Luo, Jinhua; Wu, Yaohui; Chen, Xiaoyong; He, Tianpei; Wang, Guangjun; Wang, Yonghong; Zhao, Yunlin; and Chen, Zhefen, "Synergistic Adsorption-photocatalytic Activity using Z-Scheme Based Magnetic ZnFe2O4/CuWO4 Heterojunction for Tetracycline Removal" (2022). Faculty Authors and Creators Reception. 140.
https://opus.govst.edu/fac/140