锗离子印迹聚合物微球吸附材料的杂化制备及表征

发布时间：2018-03-20 05:08

  本文选题：锗　切入点：印迹聚合物　出处：《中国有色金属学报》2017年09期 　论文类型：期刊论文

【摘要】：以8-羟基喹啉与四氯化锗配合物为模板、丙烯酰胺为功能单体、二甲基丙烯酸乙二醇酯为交联剂、偶氮二异丁腈为引发剂、浓盐酸为调整剂、氯仿为溶剂,采用杂化沉淀聚合法制备锗离子印迹聚合物微球吸附材料,采用红外光谱、扫面电镜、比表面积及孔隙分析仪和热重分析对其进行表征。结果表明:印迹聚合物MIPs红外光谱存在显著的胺基、羧基和C—N伸缩振动特征峰,无芳香族伸缩振动特征峰出现,扫描电镜显示其以纳米级微球结构存在、形状相似的空腔结构,表明MIPs在洗脱过程中已将8-羟基喹啉与四氯化锗配合物洗脱干净。热重分析表明,印迹聚合物MIPs较非印迹聚合物NIPs的热稳定性强,MIPs的起始分解温度为354.28℃;吸附解吸实验表明,MIPs对锗的吸附率为96.84%、解吸率为96.50%,MIPs对锗的吸附容量为387.36 mg/g。
[Abstract]:The complex of 8-hydroxyquinoline and germanium tetrachloride was used as template, acrylamide as functional monomer, glycol dimethacrylate as crosslinking agent, azodiisobutyronitrile as initiator, concentrated hydrochloric acid as adjusting agent and chloroform as solvent. Germanium ion imprinted polymer microspheres were prepared by hybrid precipitation polymerization. The specific surface area and pore size analyzer were characterized by thermogravimetric analysis. The results showed that there were significant amine groups, carboxyl groups and C-N stretching vibration peaks in MIPs spectra of imprinted polymers, and no aromatic stretching vibration characteristic peaks appeared. Scanning electron microscope (SEM) showed that the complex of 8-hydroxyquinoline and germanium tetrachloride had been eluted by MIPs in the process of elution. The results of thermogravimetric analysis showed that the complex of 8-hydroxyquinoline and germanium tetrachloride had been eluted by SEM. The thermal stability of imprinted polymer MIPs is stronger than that of non-imprinted polymer NIPs at 354.28 鈩，

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