Polymers of intrinsic microporosity shows great potential for dye adsorption and magnetic Fe₃O₄ are easy to be separated. In this work, hydrolyzed polymers of intrinsic microporosity-1/Fe₃O₄ composite adsorbents were prepared by phase inversion and hydrolysis process for cationic dye adsorption. The chemical structure and morphology of the composite adsorbents were systematically characterized by several characterization methods. Using methylene blue as the target dye, the influences of solution pH, contact time, initial dye concentration, and system temperature on the methylene blue adsorption process were investigated. The incorporation of Fe₃O₄ particle into hydrolyzed polymers of intrinsic microporosity-1 endow the adsorbent with high magnetic saturation (20.7 emu·g⁻¹) which allows the rapid separation of the adsorbent. Furthermore, the adsorption process was simulated by adsorption kinetics, isotherms and thermodynamics to gain insight onto the intrinsic adsorption mechanism. In addition, the composite adsorbents are able to selectively adsorb cationic dyes from mixed dyes solution. Hydrolyzed polymers of intrinsic microporosity/Fe₃O₄ shows only a slight decrease for methylene blue adsorption after 10 adsorption/regeneration cycles, demonstrating the outstanding regeneration performance. The high adsorption capacity, outstanding regeneration ability, together with simple preparation method, endow the composite adsorbents great potential for selective removal of cationic dyes in wastewater system.

具有固有微孔性的聚合物显示出巨大的染料吸附潜力，并且磁性Fe ₃ O ₄易于分离。本工作采用相转化和水解工艺制备了具有固有微孔性的水解聚合物-1/Fe ₃ O ₄复合吸附剂，用于阳离子染料吸附。通过多种表征方法系统地表征了复合吸附剂的化学结构和形貌。以亚甲基蓝为目标染料，考察了溶液pH、接触时间、初始染料浓度和系统温度对亚甲基蓝吸附过程的影响。将Fe ₃ O ₄颗粒掺入固有微孔率-1的水解聚合物中赋予吸附剂高磁饱和度(20.7 emu·g ^-1 )，从而允许吸附剂的快速分离。此外，通过吸附动力学、等温线和热力学模拟吸附过程，以深入了解吸附的内在机制。此外，复合吸附剂能够选择性地从混合染料溶液中吸附阳离子染料。固有微孔性水解聚合物/Fe ₃ O ₄在10次吸附/再生循环后，亚甲基蓝吸附量仅略有下降，表现出出色的再生性能。高吸附容量、突出的再生能力以及简单的制备方法使得复合吸附剂在选择性去除废水系统中的阳离子染料方面具有巨大的潜力。