摘要
目的:制备功能化共价有机框架(AC-COF)材料,评估其对苯酚和甲苯的吸附性能及再生能力,为水处理应用提供支持。方法:采用溶剂热法合成AC-COF,并通过比表面积、红外光谱和X射线衍射法表征其结构特性。通过静态和动态吸附实验评估其吸附容量和去除率,并测试多次吸附-解吸循环的再生性能。结果:AC-COF材料的比表面积为(982.43±5.12)m2/g,孔径分布为微孔(1.32 nm)和介孔(3.41 nm)。静态吸附实验中,苯酚和甲苯的最大吸附容量分别为(46.88±1.14)mg/g和(38.25±0.92)mg/g,去除率分别为91.56%和73.52%;动态吸附实验中,苯酚和甲苯的去除率分别为91.76%和77.76%。第5次循环后吸附容量保持率分别为91.04%和88.44%。结论:AC-COF材料具有高效吸附和良好再生性能,在有机污染物去除中具有良好的应用潜力。
Objective:To prepare functionalized covalent organic framework(AC-COF)materials to evaluate their adsorption properties and regeneration capacity of phenol and toluene,and to support water treatment applications.Methods:AC-COF is synthesized by solvothermal method,and its structural properties are characterized by specific surface area,infrared spectroscopy and X-ray diffraction.The adsorption capacity and removal rate are evaluated by static and dynamic adsorption experiments,and the regenerative performance of multiple adsorption-desorption cycles is tested.Results:The specific surface area of AC-COF is(982.43±5.12)m2/g,and the pore size distribution is microporous(1.32 nm)and mesoporous(3.41 nm).In the static adsorption experiment,the maximum adsorption capacities of phenol and toluene are(46.88±1.14)mg/g and(38.25±0.92)mg/g,respectively,and the removal rates are 91.56%and 73.52%,respectively.In the dynamic adsorption experiment,the removal rates of phenol and toluene are 91.76%and 77.76%,respectively.After the fifth cycle,the adsorption capacity retention rates are 91.04%and 88.44%,respectively.Conclusion:AC-COF materials have efficient adsorption and good regeneration properties,and have good application potential in the removal of organic pollutants.
作者
凡长坡
FAN Changpo(School of Pharmaceutical and Chemical Engineering,Southeast University Chengxian College,Nanjing 210000,China)
出处
《生物化工》
2025年第2期154-157,共4页
Biological Chemical Engineering
关键词
功能化共价有机框架
氨基-羧基修饰
有机污染物
吸附性能
水处理
functionalized covalent organic framework
amino-carboxyl group modification
organic pollutants
adsorption performance
dynamic model
water treatment
作者简介
凡长坡(1987-),男,江苏兴化人,本科,实验师,研究方向为新型功能材料的开发。
