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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of magnetic molecularly imprinted polymers for selective recognition of 3-methylindole
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Preparation and characterization of magnetic molecularly imprinted polymers for selective recognition of 3-methylindole

机译：用于选择性识别3-甲基吲哚的磁性分子印迹聚合物的制备和表征

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摘要

In this work, magnetic molecularly imprinted polymers (MMIPs) were used as novel adsorbents for selective adsorption of 3-methylindole from model oil. The MMIPs were synthesized by precipitation polymerization and surface molecularly imprinted technique, using Fe_3O_4 nanoparticles as magnetically susceptible component, methylacrylic acid as dressing agent and functional monomer, ethylene glycol dimethacrylate as crosslinker, and 3-methylindole as template molecule. The MMIPs were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, vibrating sample magnetometer, and thermogravimetric analyzer, respectively. The adsorption performances of MMIPs were investigated by batch adsorption experiments in terms of kinetics, isotherms, and selective recognition adsorption, respectively. The results indicate that MMIPs have high recognition ability and fast binding kinetics for 3-methylindole. Meanwhile, the adsorption equilibrium time was about 2 h and the equilibrium adsorption amount was ～38 mg g~(-1) at 298 K. The heterogeneous MMIPs were modeled with pseudo-second-order and Langmuir isotherm equation.
机译：在这项工作中，磁性分子印迹聚合物（MMIPs）被用作新型吸附剂，用于从模型油中选择性吸附3-甲基吲哚。通过沉淀聚合和表面分子印迹技术，以Fe_3O_4纳米粒子为磁敏组分，甲基丙烯酸为敷料剂和功能单体，乙二醇二甲基丙烯酸酯为交联剂，3-甲基吲哚为模板分子，合成了MMIPs。分别通过傅立叶变换红外光谱，扫描电子显微镜，振动样品磁力计和热重分析仪对MMIP进行了表征。分别通过动力学，等温线和选择性识别吸附，通过间歇吸附实验研究了MMIPs的吸附性能。结果表明，MMIPs对3-甲基吲哚具有较高的识别能力和快速的结合动力学。同时，在298 K的条件下，吸附平衡时间约为2 h，平衡吸附量为〜38 mg g〜（-1）。用伪二级和Langmuir等温方程对非均相MMIPs进行建模。

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