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Huang FZ, Wang YQ, Gao WY, Cao XQ, Zhang Y, Shang YN, Zhang YZ, Kan YJ. Construction and regulation of high active sites in montmorillonite composite catalyst for the removal of ofloxacin via persulfate activation. Heliyon 2024; 10:e29896. [PMID: 38707273 PMCID: PMC11066642 DOI: 10.1016/j.heliyon.2024.e29896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 04/17/2024] [Accepted: 04/17/2024] [Indexed: 05/07/2024] Open
Abstract
In this study, ionic liquids (ILs) were used as organic modifiers by introducing montmorillonite nanolayers containing potential C and N active sites between the montmorillonite nanolayers. Organically modified montmorillonite (ILs-Mt-p) was further prepared by high-temperature pyrolysis under N2 and used for the removal of ofloxacin (OFL) by activated peroxymonosulfate (PMS). Combined with XPS and other characterization analyses, it was found that the catalyst materials prepared from different organic modifiers had similar surface functional groups and graphitized structures, but contained differences in the types and numbers of C and N active sites. The catalyst (3CPC-Mt-p) obtained after pyrolysis of montmorillonite modified with cetylpyridinium chloride (CPC) had optimal catalytic performance, in which graphitic C, graphitic N, and carbonyl group (C[bond, double bond]O) could synergistically promote the activation of PMS by electron transfer, and 77.3 % of OFL could be removed within 60 min. The effects of OFL concentration, initial pH, and anions on the effects of OFL removal by the 3CPC-Mt-p/PMS system were further investigated. Satisfactory degradation results were obtained over a wide pH range. Cl- promoted the system to degrade OFL, while the presence of SO42-, H2PO4- and HA showed some inhibition, but overall the 3CPC-Mt-p catalysts had a strong anti-interference ability, showing good application prospects. The quenching experiments and EPR tests showed that O2-- and 1O2 in the 3CPC-Mt-p/PMS system were the main reactive oxygen species for the degradation of OFL, and •OH was also involved in the reaction. This study provides ideas for the construction and modulation of active sites in mineral materials such as montmorillonite and broadens the application of montmorillonite composite catalysts in advanced oxidation processes for the treatment of antibiotic wastewater.
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Affiliation(s)
- Fu-zhi Huang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Ya-qi Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Wan-yin Gao
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Xiao-qiang Cao
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Yang Zhang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Ya-nan Shang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Yi-zhen Zhang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Yu-jiao Kan
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
- Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao, 266590, China
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Zhao D, Zhai C, He Y, Chen B, Gao C, Huang H, Guo Z. Insights into the degradation of norfloxacin antibiotics on boron-doped diamond anode: Kinetics, pathways and mechanisms. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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Magerusan L, Pogacean F, Rada S, Pruneanu S. Sulphur-doped graphene based sensor for rapid and efficient gallic acid detection from food related samples. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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