Facile synthesis of Metal-Organic Framework/Chitosan cryogel as a robust Scavenger for Diclofenac sodium
文献类型： 外文期刊
作者： Shi, Yanke 1 ; Huang, Lijin 1 ; Bai, Yu 1 ; Lei, Ouyang 1 ; Zhao, Huiyu 2 ; Wang, Xinquan 2 ; Shuai, Qin 1 ;
作者机构： 1.China Univ Geosci, Fac Mat Sci & Chem, State Key Lab Biogeol & Environm Geol, 388 Lumo Rd, Wuhan 430074, Peoples R China
2.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Key Lab Detect Pesticide Residues & Control Zhejia, Inst Agroprod Safety & Nutr, Hangzhou 310021, Peoples R China
关键词： NH 2-MIL-53(Fe); Chitosan; Cryogel; Adsorption; Diclofenac sodium
期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.2； 五年影响因子：13.5 ）
ISSN： 1385-8947
年卷期： 2024 年 501 卷
页码：
收录情况： SCI
摘要： Diclofenac sodium (DS), a commonly detected contaminant in aquatic environments, poses a a significant risk to both the ecological balance and the safety of aquatic products. Therefore, efficient removal of DS from water is ergently needed but remains a major challenge. In this study, an environmentally friendly Fe-based metalorganic framework/chitosan (NH2-MIL-53(Fe)/CS) cryogel was prepared through a Schiff base condensation reaction under mild conditions. Taking advantage of the catalytic role of the MOF in accelerating the reaction between CS and 1,3,5-triformylphloroglucinol, NH2-MIL-53(Fe) powders were incorporated into the polymeric networks within 30 s. Owing to the rich binding sites, the resulting NH2-MIL-53(Fe)/CS cryogel demonstrated remarkable efficacy in eliminating DS from water. The adsorption process reached equilibrium within 120 min with a maximum adsorption capacity of 728.6 mg g-1. A comprehensive mechanistic investigation revealed that the exceptional adsorption capability of the NH2-MIL-53(Fe)/CS cryogel for DS was attributed to the synergistic effect of multiple interactions, including favorable hydrophilicity, electrostatic forces, it-it stacking, hydrogen bonding, and coordination interaction. Thus, this study provides a straightforward and rapid synthesis route for MOF/CS cryogel, offering a promising adsorbent that combines exceptional adsorption performance with ease of separation. The resulting MOF/CS cryogel holds great potential for treating DS-contaminated wastewater.
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