Phosphogypsum-Supported CoFe2O4 for Peroxymonosulfate Activation and Bisphenol AF Degradation: Performance and Mechanistic Assessment
- 1Sichuan University of Architectural Technology, Deyang 618000, China
- 2Sichuan University, Chengdu 610065, China
- 3Chengdu Yunshu Environmental Protection Equipment Co., Ltd., Chengdu 610095, China
Abstract
Bisphenol AF (BPAF), a highly persistent fluorinated substitute for bisphenol A with endocrine-disrupting risks, resists conventional water treatment. To simultaneously address recalcitrant fluorinated pollutant removal and phosphogypsum (PG) valorization, we synthesized a CoFe2O4@PG composite catalyst via sol-gel using industrial PG as support, and applied it to activate peroxymonosulfate (PMS) for BPAF degradation. CoFe2O4 was successfully loaded onto PG, forming densely packed quasi-spherical aggregates. Under optimal conditions, the 10% CoFe2O4@PG/PMS system removed 99.17% of BPAF within 60 min, outperforming CoFe2O4/PMS and confirming that PG loading enhances catalytic activity. The system tolerated pH variations; Cl− had some interference, while CO32−, SO42−, and HPO42− showed limited effects. The Co(II)/Co(III) and Fe(II)/Fe(III) redox cycles play a key role in the activation of PMS to generate reactive oxygen species (ROS), with the sulfate radical (SO4•−) and singlet oxygen (1O2) being the primary reactive species. The catalyst exhibited broad pH adaptability, anti-interference, and cycling stability; after five cycles, removal decreased by only 15.48%, and metal leaching complied with Chinese national standards. This work offers a new strategy for fluorinated-pollutant remediation and PG valorization.
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BibTeX
@article{zhang2026phosphogypsumsupported,
title = {{Phosphogypsum-Supported CoFe2O4 for Peroxymonosulfate Activation and Bisphenol AF Degradation: Performance and Mechanistic Assessment}},
author = {Jian Zhang and Ningruo Wang and Caixia Deng and Yuhan Chen and Jiewen Xiao and Hetian Li and Biao Zhong and Huarong Liu and Bo Feng and Yajun Xu},
journal = {Catalysts},
year = {2026},
month = sep,
doi = {10.3390/catal16100882},
url = {https://www.mdpi.com/2073-4344/16/10/882},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Phosphogypsum-Supported CoFe2O4 for Peroxymonosulfate Activation and Bisphenol AF Degradation: Performance and Mechanistic Assessment
AU - Jian Zhang
AU - Ningruo Wang
AU - Caixia Deng
AU - Yuhan Chen
AU - Jiewen Xiao
AU - Hetian Li
AU - Biao Zhong
AU - Huarong Liu
AU - Bo Feng
AU - Yajun Xu
PY - 2026
DA - 2026/09/30
JO - Catalysts
DO - 10.3390/catal16100882
UR - https://www.mdpi.com/2073-4344/16/10/882
AB - Bisphenol AF (BPAF), a highly persistent fluorinated substitute for bisphenol A with endocrine-disrupting risks, resists conventional water treatment. To simultaneously address recalcitrant fluorinated pollutant removal and phosphogypsum (PG) valorization, we synthesized a CoFe2O4@PG composite catalyst via sol-gel using industrial PG as support, and applied it to activate peroxymonosulfate (PMS) for BPAF degradation. CoFe2O4 was successfully loaded onto PG, forming densely packed quasi-spherical aggregates. Under optimal conditions, the 10% CoFe2O4@PG/PMS system removed 99.17% of BPAF within 60 min, outperforming CoFe2O4/PMS and confirming that PG loading enhances catalytic activity. The system tolerated pH variations; Cl− had some interference, while CO32−, SO42−, and HPO42− showed limited effects. The Co(II)/Co(III) and Fe(II)/Fe(III) redox cycles play a key role in the activation of PMS to generate reactive oxygen species (ROS), with the sulfate radical (SO4•−) and singlet oxygen (1O2) being the primary reactive species. The catalyst exhibited broad pH adaptability, anti-interference, and cycling stability; after five cycles, removal decreased by only 15.48%, and metal leaching complied with Chinese national standards. This work offers a new strategy for fluorinated-pollutant remediation and PG valorization.
SN - 2073-4344
ER -