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A porous fabric-based molecularly imprinted polymer for specific recognition of tetracycline by radiation-induced RAFT-mediated graft copolymerization
Radiation Physics and Chemistry ( IF 2.9 ) Pub Date : 2022-06-17 , DOI: 10.1016/j.radphyschem.2022.110314
Meshude Akbulut Söylemez , Hatice Kaplan Can , Esra Bağda , Murat Barsbay

Despite technical and methodological advances, the selective separation of antibiotics from aqueous media remains a challenge. In this work, a novel molecularly imprinting polymer (MIP) with specific recognition sites was constructed by radiation-induced RAFT-mediated graft copolymerization of methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA) from PE/PP nonwoven fabric for tetracycline hydrochloride (TC) removal. Binding isotherm and kinetics were found to follow Freundlich and pseudo-second-order model, respectively. The as-synthesized molecularly-imprinted fabric exhibited excellent binding performance towards TC, with the maximum adsorption capacity and imprinting factor of 46.7 mg g−1 and 3.6, respectively. Moreover, it removed approximately 95% of TC from the aqueous media, also performed well in real environmental samples. For comparison purposes, MIPs obtained with conventional grafting performed significantly lower than those attained by RAFT-mediated grafting. After ten consecutive adsorption and desorption cycles, the fabric-based molecularly-imprinted material retained excellent stability and reusability with a performance loss of only 3.6%, which could facilitate its potential application on an industrial scale.



中文翻译:

一种基于多孔织物的分子印迹聚合物,用于辐射诱导的 RAFT 介导的接枝共聚特异性识别四环素

尽管技术和方法取得了进步,但从水介质中选择性分离抗生素仍然是一个挑战。在这项工作中,通过辐射诱导的 RAFT 介导的甲基丙烯酸(MAA)和乙二醇二甲基丙烯酸酯(EGDMA)从 PE/PP 无纺布上接枝共聚制备盐酸四环素,构建了一种具有特定识别位点的新型分子印迹聚合物(MIP)。 TC) 删除。发现结合等温线和动力学分别遵循 Freundlich 和准二级模型。合成后的分子印迹织物对TC表现出优异的结合性能,最大吸附容量和印迹因子为46.7 mg g -1和 3.6,分别。此外,它从水介质中去除了大约 95% 的 TC,在实际环境样品中也表现良好。出于比较目的,通过传统嫁接获得的 MIP 的表现明显低于通过 RAFT 介导的嫁接获得的 MIP。经过十次连续的吸附和解吸循环后,织物基分子印迹材料保持了优异的稳定性和可重复使用性,性能损失仅为 3.6%,可促进其在工业规模上的潜在应用。

更新日期:2022-06-22
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