碳纳米管芹菜素印迹聚合物的制备及应用  

Preparation and Application of Apigenin Imprinted Polymers Based on Multi-walled Carbon Nanotubes

作　　者：丁佳[1] 吕莎平 刘跃进[1] 吴志民[1] 李勇飞[1] 潘浪胜[1] DING Jia;LU Sha-ping;LIU Yue-jin;WU Zhi-min;LI Yong-fei;PAN Lang-sheng.(Department of Chemical Engineering, Xiangtan University, Xiangtan 411005)

机构地区：[1]湘潭大学化工学院,湖南湘潭411105

出　　处：《分析科学学报》2018年第2期219-223,共5页Journal of Analytical Science

摘　　要：本文以羧基化多壁碳纳米管为基材,结合芹菜素、丙烯酰胺、丙酮和乙二醇二甲基丙烯酸酯,在多壁碳纳米管表面合成对芹菜素具有特异性识别的分子印迹聚合物(MWCNTs-MIPs),并利用扫描电镜(SEM)、傅里叶变换红外(FT-IR)光谱和比表面积分析(BET)对该印迹聚合物进行表征。结果表明,在碳纳米管表面能均匀稳定地接枝一层厚度约为10~20nm的印迹材料。对聚合物的静态吸附性能和选择性进行研究,表明MWCNTs-MIPs的吸附效果优于其非印迹材料(MWCNTs-NIPs)。固相萃取实验表明该方法不仅重现性好,并能使芹菜素的纯度由0.53%增高至90.93%,回收率可达95.84%,富集因子高达171.6。可作为复杂天然产物中芹菜素分离提取材料。A molecular imprinted polymers（MWCNTs-MIPs） was synthesized by carboxylated multi- walled carbon nanotubes, apigenin（API）, acrylamide and EGDMA and acetone. The surface morphology of MIPs were characterized by scanning electron microscopy, fourier-transform infrared spectroscopy and BET surface larea analysis. The results indicated that a uniform and stable MIPs was grafted onto the surface of carbon nanotubes with a thickness of 10-20 nm. The adsorption properties and selectivity was demonstrated by adsorption kinetic experiments of MWCNTs-MIPs and MWCNTs-NIPs, which demonstrated that the MWCNTs-MIPs had a better adsorption capacity for API due to its more specific selectivity than MWCNTs-NIPs. The washing, eluting and the reproducibility of the solid phase extraction method were studied,and the purity of API increased from 0.53% to 90.93% with a recovery of 95.84%. The successful preparation of the MWCNTs-MIPs and its application for API provides the potential in the development of separation materials for complex nature products.

关 键 词：芹菜素 多壁碳纳米管 印迹聚合物 吸附 固相萃取 

分 类 号：O658[理学—分析化学]