{"title":"用诱导型 CuMOF 制备三维花状 MgAl-LDHs 以改善其吸附和抗菌性能","authors":"Yuanyuan Chen, Fengqin Tang, Feng Zhang, Yufeng He, Pengfei Song, Rongmin Wang","doi":"10.1016/j.molstruc.2024.140583","DOIUrl":null,"url":null,"abstract":"<div><div>Chronic and inappropriate use of antibiotics, antibiotic residue, and bacterial infections present a significant threat to both the environment and human health. This study focused on the effective remediation of wastewater contaminants through the synthesis of Cu-based metal-organic framework (CuMOF) conjugated with layered double hydroxide (LDHs) via hydrothermal processing, resulting in the development of a novel three-dimensional (3D) flower-shaped CuMOF@LDHs (Fc-LDHs) hybrid materials. After being characterized by SEM, FT-IR, XRD, zeta potential and BET, the obtained Fc-LDHs was applied to adsorption of antibiotics, and its antibacterial activity was also investigated. It indicated that Fc-LDHs exhibited excellent performance in both adsorption and antibacterial activity. Utilizing tetracycline (TC) as a representative antibiotic, the influence of various parameters on the adsorption efficiency was examined. The study revealed that an adsorbent mass of 0.08 g could achieve a removal efficiency of 94.2 % for TC at an initial concentration of 50 mg/L within 90 min, with the removal rate remaining at 72.6 % after four cycles of adsorption-desorption. It was also found that the adsorption mechanism was consistent with the Freundlich isothermal model and the pseudo-second-order kinetic model. The exceptional adsorption properties were primarily ascribed to the synergistic effects of electrostatic interactions, pore filling, chelation and hydrogen bonding interactions between Fc-LDHs and TC. Simultaneously, the antibacterial rates of Fc-LDHs reached to 90.3 % and 95.7 % against <em>Escherichia coli (E. coli)</em> and <em>Staphylococcus aureus (S. aureus)</em>, respectively. In conclusion, Fc-LDHs proved to be a highly efficient remedy for addressing antibiotic and antibacterial pollution, functioning both as a proficient adsorbent and antibacterial agent.</div></div>","PeriodicalId":16414,"journal":{"name":"Journal of Molecular Structure","volume":"1322 ","pages":"Article 140583"},"PeriodicalIF":4.0000,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fabrication of 3D flower-shaped MgAl-LDHs with inducing CuMOF for improving its adsorption and antibacterial performance\",\"authors\":\"Yuanyuan Chen, Fengqin Tang, Feng Zhang, Yufeng He, Pengfei Song, Rongmin Wang\",\"doi\":\"10.1016/j.molstruc.2024.140583\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Chronic and inappropriate use of antibiotics, antibiotic residue, and bacterial infections present a significant threat to both the environment and human health. This study focused on the effective remediation of wastewater contaminants through the synthesis of Cu-based metal-organic framework (CuMOF) conjugated with layered double hydroxide (LDHs) via hydrothermal processing, resulting in the development of a novel three-dimensional (3D) flower-shaped CuMOF@LDHs (Fc-LDHs) hybrid materials. After being characterized by SEM, FT-IR, XRD, zeta potential and BET, the obtained Fc-LDHs was applied to adsorption of antibiotics, and its antibacterial activity was also investigated. It indicated that Fc-LDHs exhibited excellent performance in both adsorption and antibacterial activity. Utilizing tetracycline (TC) as a representative antibiotic, the influence of various parameters on the adsorption efficiency was examined. The study revealed that an adsorbent mass of 0.08 g could achieve a removal efficiency of 94.2 % for TC at an initial concentration of 50 mg/L within 90 min, with the removal rate remaining at 72.6 % after four cycles of adsorption-desorption. It was also found that the adsorption mechanism was consistent with the Freundlich isothermal model and the pseudo-second-order kinetic model. The exceptional adsorption properties were primarily ascribed to the synergistic effects of electrostatic interactions, pore filling, chelation and hydrogen bonding interactions between Fc-LDHs and TC. Simultaneously, the antibacterial rates of Fc-LDHs reached to 90.3 % and 95.7 % against <em>Escherichia coli (E. coli)</em> and <em>Staphylococcus aureus (S. aureus)</em>, respectively. In conclusion, Fc-LDHs proved to be a highly efficient remedy for addressing antibiotic and antibacterial pollution, functioning both as a proficient adsorbent and antibacterial agent.</div></div>\",\"PeriodicalId\":16414,\"journal\":{\"name\":\"Journal of Molecular Structure\",\"volume\":\"1322 \",\"pages\":\"Article 140583\"},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2024-11-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Molecular Structure\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022286024030916\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Structure","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022286024030916","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Fabrication of 3D flower-shaped MgAl-LDHs with inducing CuMOF for improving its adsorption and antibacterial performance
Chronic and inappropriate use of antibiotics, antibiotic residue, and bacterial infections present a significant threat to both the environment and human health. This study focused on the effective remediation of wastewater contaminants through the synthesis of Cu-based metal-organic framework (CuMOF) conjugated with layered double hydroxide (LDHs) via hydrothermal processing, resulting in the development of a novel three-dimensional (3D) flower-shaped CuMOF@LDHs (Fc-LDHs) hybrid materials. After being characterized by SEM, FT-IR, XRD, zeta potential and BET, the obtained Fc-LDHs was applied to adsorption of antibiotics, and its antibacterial activity was also investigated. It indicated that Fc-LDHs exhibited excellent performance in both adsorption and antibacterial activity. Utilizing tetracycline (TC) as a representative antibiotic, the influence of various parameters on the adsorption efficiency was examined. The study revealed that an adsorbent mass of 0.08 g could achieve a removal efficiency of 94.2 % for TC at an initial concentration of 50 mg/L within 90 min, with the removal rate remaining at 72.6 % after four cycles of adsorption-desorption. It was also found that the adsorption mechanism was consistent with the Freundlich isothermal model and the pseudo-second-order kinetic model. The exceptional adsorption properties were primarily ascribed to the synergistic effects of electrostatic interactions, pore filling, chelation and hydrogen bonding interactions between Fc-LDHs and TC. Simultaneously, the antibacterial rates of Fc-LDHs reached to 90.3 % and 95.7 % against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), respectively. In conclusion, Fc-LDHs proved to be a highly efficient remedy for addressing antibiotic and antibacterial pollution, functioning both as a proficient adsorbent and antibacterial agent.
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