钇(III)离子印迹聚合物的制备及性能研究

以钇(III)离子作为模板, 以4-乙烯吡啶(4-VP)、乙酰丙酮(Hacac)和钇(III)形成的三元配合物为功能单体、乙二醇二甲基丙烯酸酯(EDMA)为交联剂, 采用本体聚合法合成了钇(III)离子配位分子印迹聚合物. 系统研究了印迹聚合物对钇(III)离子的吸附性和选择性. 结果表明, 印迹聚合物对钇(III)离子有很好的亲和性, 达到吸附平衡的时间为60 min, 最大吸附量为12.4 mg•g−1, 重复使用时性能稳定, 而且印迹聚合物对钇(III)离子具有较强的选择性识别能力.

Preparation and Characteristics of the Yttrium(III)-ion Complex Molecularly Imprinted Polymer

A novel type of template molecularly imprinted polymer (MIP) was prepared by bulk polymerization using yttrium(III) ion as a template, yttrium(III)-4-vinylpyridine-acetylacetonate complex as a functional monomer and ethylene glycol dimethacrylate (EDMA) as a crosslinker. The selectivity and adsorption capacity for the Y(III) ions of Y(III)-MIP were systematically studied in this paper. The results obtained show that the sorption equilibrium was achieved in 60 min and the maximum sorption of yttrium(III) imprinted polymer was about 12.4 mg•g−1. When the Y(III)-MIP was repeatedly used, its adsorption capacity was kept. And the selectively adsorbed amount of Y(III) ion on Y(III)-MIP is higher than those of all other ions studied.