新型MOF/壳聚气凝胶去除Cu(Ⅱ)及环丙沙星  

Developing a New MOF/Chitosan Aerogel to Remove Cu(Ⅱ)and Ciprofloxacin

作　　者：狄军贞[1] 高梦晴 姜洋洋 阮浈 DI Junzhen;GAO Mengqing;JIANG Yangyang;RUAN Zhen(College of Civil Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学土木工程学院,辽宁阜新123000

出　　处：《环境科学与技术》2025年第3期210-219,共10页Environmental Science & Technology

基　　金：国家自然科学基金项目(416772247)。

摘　　要：该研究旨在开发一种能够同时去除水体中重金属和抗生素的高效吸附材料。以壳聚糖气凝胶为载体,制备了负载Fe/ZIF-8的双金属MOFs凝胶球。通过扫描电子显微镜、X射线衍射、傅立叶变换红外光谱等技术表征了该材料的结构与组成。实验表明,该复合材料在pH值为6时对Cu(Ⅱ)和环丙沙星的最大吸附容量分别为295.86 mg/g和96.98 mg/g,吸附行为均符合准二阶动力学模型和Freundlich等温吸附模型。吸附机制分析表明,吸附过程主要通过离子交换、静电吸引、氢键、表面络合作用以及π-π相互作用实现。此外,该复合材料在经过5次吸附-解吸循环后,仍能表现出良好的再生性和重复使用性。The aim of this study is to develop an new kind of composite:an efficient adsorption material that can simultane⁃ously remove heavy metals and antibiotics from water.The new material relates to bimetallic MOFs gel spheres loaded with Fe/ZIF-8 prepared in the laboratory,and with chitosan aerogel being made as a carrier,then the structure and composi⁃tion of the material were characterized by scanning electron microscopy,X-ray diffraction and Fourier transform infrared spectroscopy.The experimental results showed that in the solution containing Cu(Ⅱ)and ciprofloxacinthe,with the pH value being adjusted,the maximum adsorption capacities of Cu(Ⅱ)and ciprofloxacin,at a pH of 6,were 295.86 mg/g and 96.98 mg/g,respectively;the adsorption behavior of this composite fit the quasi-second-order kinetic model and the Freun⁃dlich isothermal adsorption model;and the adsorption mechanism was analyzed,which suggested that the adsorption process was mainly realized through ion exchange,electrostatic attraction,hydrogen bond,surface complexation andπ-πinteraction.Furthermore,the adsorption material possessed good re-producibility and reusability even after five sorption-desorption cycles.

关 键 词：双金属MOFs 壳聚糖 养殖废水 抗生素 吸附 

分 类 号：X703[环境科学与工程—环境工程]