Abstract

An easy collecting Fe₃O₄ magnetic methylene blue molecularly imprinted polymer was synthesized via bulk polymerization method. It was found that the adsorption capacity can be increased with increasing of methylene blue concentration. Following a comprehensive characterization, its measured maximum adsorption capacity on methylene blue, for the first time, can be reached to 4860 mg/g, much higher than other adsorbents such as activated carbon, water-absorbent resin etc., and also higher than methylene blue molecularly imprinted polymer prepared in our lab before without the Fe₃O₄. In addition, the molecularly imprinting technique was confirmed to give a high methylene blue selectivity. From a physical chemistry point of view, the adsorption performance of magnetic methylene blue molecularly imprinted polymer was well represented by the Langmuir equation and agree well with the pseudo-first-order kinetic model. Shown that the adsorption was mainly a monolayer and chemical adsorption process and the rate control steps were mainly liquid film diffusion.

中文翻译：

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新型磁性亚甲基蓝分子印迹聚合物的制备及性能

摘要

采用本体聚合法合成了一种易收集的Fe ₃ O ₄磁性亚甲基蓝分子印迹聚合物。发现吸附容量可以随着亚甲蓝浓度的增加而增加。经过综合表征，其对亚甲基蓝的最大吸附量首次测得可达4860mg/g，远高于活性炭、吸水树脂等其他吸附剂，也高于亚甲基我们实验室以前在没有Fe ₃ O _{4 的}情况下制备的蓝色分子印迹聚合物. 此外，分子印迹技术被证实可提供高亚甲蓝选择性。从物理化学的角度来看，磁性亚甲基蓝分子印迹聚合物的吸附性能由朗缪尔方程很好地表示，并且与准一级动力学模型非常吻合。表明吸附主要是单层和化学吸附过程，速率控制步骤主要是液膜扩散。