以4-乙烯基吡啶和丙烯酰胺为双功能单体,乙二醇二甲基丙烯酸酯为交联剂,甲醇为溶剂,制备了Cu2+印迹聚合物。采用傅里叶变换红外光谱(FT-IR)和扫描电镜(SEM)对印迹和非印迹聚合物的结构和形貌进行了表征。研究了印迹聚合物对 Cu2+的吸附、洗脱性能和选择识别能力。结果表明,在 pH 值为6.0,10 min即达吸附平衡；以0.3 mol/L的 HCl作为洗脱液,3 min洗脱率达96.0%以上；与非印迹聚合物相比,印迹聚合物对Cu2+具有优异的选择吸附和识别性能,饱和吸附量为15.67 mg/g,富集倍数达50倍。
A new Cu2+-imprinted polymer was prepared using 4-vinyl pyridine and acrylamide as bio-functional-monomers,ethylene glycol dimethacrylate as the crosslinking agent.The structure and morphology of Cu2+-imprinted polymer and non-imprinted polymer were characterized by Fourier transform infrared spectroscopy (FT-IR)and scanning electronmicroscopy (SEM).The adsorptive,desorption properties and the selectivity recognition ability of Cu2+-imprinted polymer were investigated.The results indicated that the adsorption ca-pacity reached equilibrium after 10 min at pH 6.0.Using 0.3 mol/L HCl as desorption solvent,the desorption rate was more than 9 6 .0% after 3 min.The Cu2+-imprinted polymer had excellent adsorption and selective rec-ognition properties compared with non-imprinted polymer.The maximum adsorption capacity of Cu2+-imprin-ted polymer was found to be 15.67 mg/g,the enrichment factor could be up to 50 times.
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