铁基金属有机骨架材料的合成与改性及其活化过硫酸盐性能的研究进展

Research progress in synthesis and modification of iron-based metal organic frameworks and their activation abilities to persulfates

铁基金属有机骨架材料(Fe-MOFs)具有比表面积大、孔隙率高、可修饰性强且合成原材料丰富无毒等特点,在活化过硫酸盐用于高级氧化技术方面有较大的应用前景。探讨了Fe-MOFs活化过硫酸盐降解水中有机污染物的自由基途径和非自由基途径,综述了Fe-MOFs的合成方法,包括溶剂热法、机械化学合成法、微波辅助合成法、电化学合成法,分析了金属簇合、官能团引入、分子印迹法、材料复合、热解等改性方法,改性后的Fe-MOFs表现出更优秀的活化、吸附、稳定及循环使用性能。总结了基于Fe-MOFs活化过硫酸盐研究中存在的问题,对未来研究前景进行了展望。

Iron-based metal organic frameworks(Fe-MOFs) have promising applications in the field of advanced oxidation with activated persulfate due to their large specific surface area,high porosity,high modifiability and abundant non-toxic synthetic raw materials. Free radical and nonfree radical pathways for degradation of organic pollutants in water by Fe-MOFs activated persulfate are discussed. Synthesis methods of Fe-MOFs,including solvothermal method,mechanochemical synthesis method,microwave-assisted synthesis method,and electrochemical synthesis method are reviewed. Five modification methods including metal clustering,functional group grafting,molecular imprinting,material compounding,and pyrolysis are analyzed. Modified Fe-MOFs show better performance on activation,adsorption,stabilization and recycling. Problems in the study of Fe-MOFs-based activation of persulfate are summarized and the future research prospect is prospected.