Owing to the diverse structures and unique characteristics of MOFs, the combination of magnetic particles with porous MOFs is an attractive way for rapid and efficient extraction of organic pollutions from water. In this work, the magnetic porous composites, Fe₃O₄-PSS@ZIF-67 (PSS, poly (sodium-p-styrenesulfonate)), were prepared. The obtained composites exhibit core-shell structure, for which the spherical Fe₃O₄ particles as core are embedded in ZIF-67 shell. The existence of SO₃⁻ anions on poly (sodium-p-styrenesulfonate) is the key factor for the uniform coating of ZIF-67 on Fe₃O₄ particles. Poly (sodium-p-styrenesulfonate) providing enough chelating sites (-SO₃⁻) for Co²⁺ which could further coordinate with 2-methylimidazole to form ZIF-67. This work further studied the adsorption property of 2-nitroresorcinol in aqueous solution, using Fe₃O₄-PSS@ZIF-67 as adsorbents. The equilibrium adsorption capacity for 2-nitroresorcinol is up to 52.50 mg g⁻¹. The adsorption kinetics were investigated. The mechanism could be attributed to the electrostatic interaction between 2-nitroresorcinol and Fe₃O₄-PSS@ZIF-67 composites.

由于MOF的不同结构和独特特性，磁性颗粒与多孔MOF的结合是从水中快速有效提取有机污染物的一种有吸引力的方法。在这项工作中，制备了磁性多孔复合材料Fe ₃ O ₄ -PSS @ ZIF-67（PSS，聚（对苯乙烯磺酸钠）。所得复合材料具有核-壳结构，其中球形的Fe ₃ O ₄颗粒作为核嵌入ZIF-67壳中。SO存在₃ ^-聚阴离子（钠-对-苯乙烯磺酸酯）是用于ZIF-67对Fe的均匀涂层的关键因素₃ ö ₄粒子。聚（钠-对-苯乙烯磺酸）提供足够的螯合位点（-SO ₃ ^- ）为钴²⁺其可以与2-甲基咪唑进一步协调以形成ZIF-67。以Fe ₃ O ₄ -PSS @ ZIF-67为吸附剂，进一步研究了2-硝基间苯二酚在水溶液中的吸附性能。2-硝基间苯二酚的平衡吸附容量高达52.50 mg g ^-1 。研究了吸附动力学。该机理可以归因于2-硝基间苯二酚与Fe ₃ O ₄ -PSS @ ZIF-67复合材料之间的静电相互作用。