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Xu W, Qin R, Cao G, Qiang Y, Lai M, Lu Y. Magnetic composite photocatalyst NiFe₂O₄/ZnIn₂S₄/biochar for efficient removal of antibiotics in water under visible light: Performance, mechanism and pathway. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 360:124602. [PMID: 39079654 DOI: 10.1016/j.envpol.2024.124602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/12/2024] [Accepted: 07/22/2024] [Indexed: 08/02/2024]
Abstract
The widespread presence of antibiotics in aquatic environments, resulting from excessive use and accumulation, has raised significant concerns. A NiFe₂O₄/ZnIn₂S₄/Biochar (NFO/ZIS/BC) magnetic nanocomposite was successfully synthesized, demonstrating significantly enhanced electron-hole separation properties. Comprehensive investigations were conducted to evaluate the impact of various parameters, including catalyst mass, pH, and the presence of co-existing ions on the composite's performance. The nanoparticles of NiFe₂O₄ (NFO) and ZnIn₂S₄ (ZIS) were found to improve the surface stability and sulfamethoxazole removal capabilities of porous biochar, while also demonstrating high total organic carbon removal efficiencies. •O₂⁻ and h⁺ were identified as the predominant reactive oxygen species (ROS) in NFO/ZIS/BC-4 during the degradation process. The degradation outcomes of sulfamethoxazole under natural sunlight and water conditions were consistent with laboratory findings, affirming the robust applicative potential of NFO/ZIS/BC. Density functional theory (DFT) calculations were performed to elucidate the photocatalytic mechanism and identify potential intermediate products. Additionally, the types of heterojunctions present in the system were characterized and discussed. After multiple iterations, NFO/ZIS/BC-4 maintained effective photodegradation capabilities through five cycles. This study presents an effective method for the treatment of antibiotics in aquatic environments, offering significant potential for environmental applications.
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Affiliation(s)
- Wan Xu
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China
| | - Ronggao Qin
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China.
| | - Guangzhu Cao
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China
| | - Yi Qiang
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China
| | - Meidan Lai
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China
| | - Yanfeng Lu
- School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650031 China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China Kunming, Yunnan, 650228, China
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Chen C, Ma Z, Zhou S, Li T, Sun X. Cobalt-Tetracarboxyl-Phthalocyanine Linked with Fe3o4/Chitosan Microsphereas—Efficient Catalyst for Dye Degradation. Catal Letters 2017. [DOI: 10.1007/s10562-017-2149-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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