偕胺肟与离子印记聚合物对水中铀吸附的协同作用

Synergistic Effect of Amidoxime and Ion-imprinted Polymers on Uranium Adsorption from Aqueous Solution

为了研究偕胺肟基和离子印记聚合物对于水中铀吸附的协同作用,在文献的基础上以铀酰为模板,苯甲酰胺肟为功能单体,并用盐酸除去聚合物中的铀酰模板,首次合成了偕胺肟基修饰的铀酰离子印记聚合物.用紫外可见分光光度法证实了三元复合物(铀酰-苯甲酰胺肟-4-乙烯基吡啶)的成功合成,并对铀酰(U(Ⅵ))离子印记聚合物进行了傅里叶变换红外光谱分析.用平衡吸附法研究了实验条件对印记聚合物与非离子印迹聚合物对铀酰(U(Ⅵ))吸附效果的影响,并探索了其对铀酰的吸附效果和选择性识别能力.结果表明,离子印迹聚合物具有较高的吸附能力和选择识别能力.

In order to study the synergistic effect of amidoxime group and ion-imprinted polymers on the adsorption of uranium from aqueous solution,a new type of imprinted polymer modified by amidoxime group was first prepared by using a complex of uranyl as template,benzamidoxime as functional monomer and hydrochloric acid as leachant to leach the uranyl template on the basis of literature review.UV-Vis confirmed the successful synthesis of the ternary complex(UO2^2+-benzamidoxime-VP)and Fourier transform infrared spectroscopy was carried out to analyze the imprinted polymers.The influence of experimental conditions on the adsorption property of the ion-imprinted and non-imprinted polymers was studied by using equilibrium-adsorption method.The adsorption property and selective recognizability of the polymer were also investigated.The results showed that the ion-imprinted polymer had a fairly high adsorption capacity and selective recognizability.