摘要
利用分子印迹技术制备了重金属镉(Ⅱ)的印迹聚合物,并对其识别性能进行定量描述.以镉(Ⅱ)离子为模板,安息香肟为功能单体,乙二醇二甲基丙烯酸酯为交联剂,偶氮二异丁腈为引发剂,采用本体聚合法制备印迹聚合物.实验结果表明,与未印迹的聚合物相比较,印迹聚合物对镉(Ⅱ)离子具有较好的识别选择性,达到吸附平衡的时间为50 min,初始浓度为10 mg/mL时,吸附量为2.12 mg/g,并推测了该印迹聚合物和镉离子的识别机理.
A novel type ion imprinted polymer（IIP） was prepared by molecular imprinting technology（MIT）.The selectivity and adsorption capacity for the Cd（Ⅱ） ions of Cd（Ⅱ）-MIP were systematically studied in this paper.The IIP was prepared by bulk polymerization using Cd（Ⅱ） ion as a template,α-benzoin oxime as a functional monomer and ethylene glycol dimethacrylate（EGDMA） as a crosslinker.The results obtained show that,in comparison with non-imprinted polymer,the sorption equilibrium was achieved in 50 min and the maximum sorption of Cd（Ⅱ） imprinted polymer was about 2.12 mg/g.The mechanism for the adsorption of Cd（Ⅱ） on the imprinted polymers were investigated.
出处
《南华大学学报（自然科学版）》
2011年第1期81-86,共6页
Journal of University of South China：Science and Technology
基金
国家自然科学基金资助项目(20707008)
湖南省自然科学基金资助项目(07JJ5004)
关键词
镉离子
印迹聚合物
吸附
Cadmium ion
molecularly imprinted polymer
adsorption
