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首页> 外文期刊>Journal of Applied Polymer Science >Surface Molecularly Imprinted Polymer Prepared by Reverse Atom Transfer Radical Polymerization for Selective Adsorption Indole
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Surface Molecularly Imprinted Polymer Prepared by Reverse Atom Transfer Radical Polymerization for Selective Adsorption Indole

机译：反向原子转移自由基聚合选择性吸附吲哚制备的表面分子印迹聚合物

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摘要

The preparation of indole molecularly imprinted polymers (indole-MIPs) using 4-vinylpyridine as functional monomer, silica gel as matrix were used to adsorb indole from fuel oil specifically. The reverse atom transfer radical polymerization (RATRP) technology was introduced to prepare the surface molecularly imprinted polymers, and the precipitation polymerization was adopted in the preparation process. The obtained indole-MIPs were characterized by nitrogen adsorption, Fourier transform infrared spectrometry and scanning electron microscopy. The results show that indole-MIPs were provided with the larger surface areas and more pores. The adsorption capacity of indole-MIPs was 31.80 mg g~(-1) at 298 K, and the adsorption equilibrium was reached in a short time. The adsorption process was spontaneous by thermodynamic analysis, and an appropriate decrease in temperature could enhance the adsorption capacity. The adsorption process obeyed pseudo-second-order kinetic model by kinetics analysis. The isotherm analysis results show that both Langmuir and Sips equations were suitable to experimental data. The selective adsorption and reusable performance of indole-MIPs were favorable.
机译：以4-乙烯基吡啶为功能单体，以硅胶为基质，制备了吲哚分子印迹聚合物（吲哚-MIPs），用于从燃料油中吸附吲哚。引入逆原子转移自由基聚合技术制备表面分子印迹聚合物，制备过程采用沉淀聚合。通过氮吸附，傅立叶变换红外光谱和扫描电子显微镜对所得吲哚-MIP进行表征。结果表明，吲哚-MIP具有更大的表面积和更多的孔。吲哚-MIPs在298 K下的吸附容量为31.80 mg g〜（-1），并在短时间内达到吸附平衡。热力学分析表明吸附过程是自发的，适当降低温度可以提高吸附能力。通过动力学分析，吸附过程服从伪二级动力学模型。等温线分析结果表明，Langmuir和Sips方程均适用于实验数据。吲哚-MIP的选择性吸附和可重复使用性能良好。

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