| 程治强,王宏青*,王榆元,何芳芳,张海生,杨诗晴.新型自组装材料的制备及其对钍的识别研究[J].南华大学学报(自然科学版),2010,24(4):80~86.[CHENG Zhi-qiang,WANG Hong-qing*,WANG Yu-yuan,HE Fang-fang,ZHANG Hai-sheng,YANG Shi-qing.Preparation of Novel Self-assembling Materials and its Recognition Properties for Thorium(IV)[J].Journal of University of South China(Science and Technology),2010,24(4):80~86.] |
| 新型自组装材料的制备及其对钍的识别研究 |
| Preparation of Novel Self-assembling Materials and its Recognition Properties for Thorium(IV) |
| 投稿时间：2010-10-25 |
| DOI： |
| 中文关键词: 钍 修饰硅胶 离子印迹聚合物 识别研究 |
| 英文关键词:thorium modified silica ion imprinted polymer recognition properties |
| 基金项目:湖南省自然科学基金资助项目(10JJ6025) |
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| 中文摘要: |
| 以钍(IV)为模板离子,制备了基于硅胶表面修饰的离子印迹聚合物.采用傅立叶变换红外光谱和N2吸附-脱附对其进行了结构表征.通过静态分析和动态分析系统研究了印迹聚合物对钍(IV)的吸附行为及选择性,结果表明该印迹材料对钍(IV)的等温吸附线属于Langmuir吸附模型.与非印迹聚合物相比,离子印迹聚合物对钍(IV)离子有较好的选择识别能力,模板离子钍(IV)相对竞争离子铀(VI)、镧(III)和铈(III)的选择系数分别是50.8,78.3和82.6.并且吸附速率快,10 min即达到吸附平衡,最大吸附容量为56.8 mg/g,可望在分离富集领域获得实际应用. |
| 英文摘要: |
| A novel surface ion imprinting material based on modified silica had been successfully synthesized by self-assembling method with thorium(IV) chosen as template ion.The structure of the prepared imprinted polymer was characterized by Fourier transform infrared (FT-IR) spectroscopy and nitrogen gas adsorption-desorption method.The imprinted polymer's adsorption behavior and the selectivity were systematically studied by static and column method in this paper.The results showed that the adsorption isotherm of the imprinted material for Th(IV) could fit well in with the Langmuir isotherm model,the ion imprinted polymer had better specific selective recognition for thorium(IV) ion in comparison of non-imprinted polymer,the relative selectivity coefficients of Th (IV)/U(VI),Th(IV)/La(III) and Th(IV)/Ce(III) were 50.8,78.3 and 82.6,respectively.The adsorption equilibrium was fast,which revealed a fast adsorption reaction for Th(IV) from aqueous solution with the saturation time of less than 10 min,the maximum adsorption capacity was about 56.8 mg/g.The obtained materials can be applied in the fields of separation and enrichment. |
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