何芳芳,王宏青*,王榆元,张海生,李虹霖.磁性印迹材料的制备及其性能研究[J].南华大学学报(自然科学版),2012,26(2):74~79.[HE Fang-fang,WANG Hong-qing*,WANG Yu-yuan,ZHANG Hai-sheng,LI Hong-lin.Preparation of Magnetic Imprinting Material and Its Properties for Th(Ⅳ)[J].Journal of University of South China(Science and Technology),2012,26(2):74~79.] |
磁性印迹材料的制备及其性能研究 |
Preparation of Magnetic Imprinting Material and Its Properties for Th(Ⅳ) |
投稿时间:2012-04-30 |
DOI: |
中文关键词: 钍(Ⅳ) 磁性印迹材料 salophen 吸附 |
英文关键词:thorium(IV) magnetic imprinting material salophen absorption |
基金项目:国家自然科学基金资助项目(11175080);湖南省自然科学基金资助项目(10JJ6025) |
|
摘要点击次数: 969 |
全文下载次数: 1138 |
中文摘要: |
本实验以salophen为功能单体,Th(Ⅳ)离子为模板离子,乙二醇二甲基丙烯酸酯(EGDMA)作交联剂,用偶氮二异丁腈(AIBN)作引发剂在烯基化的磁性Fe3O4粒子表面上热聚合制备磁性印迹材料.探讨此印迹材料对钍(Ⅳ)的最佳吸附条件.结果表明:此磁性印迹材料在pH为4.5,在70 μg/mL钍(Ⅳ)中吸附30 min可以到达最大吸附容量42.54 μg/mg.Th(Ⅳ)印迹材料相对U(Ⅵ),La(Ⅲ) 和Ce(Ⅲ)的相对选择性系数分别是62.4, 82.2和93.1,说明此材料可以在La(Ⅲ), Ce(Ⅲ) 和U(Ⅳ)的存在下检测Th(Ⅳ). |
英文摘要: |
In the paper, the magnetic imprinting material was synthesized by surface imprinting technology on the surface of vinyl-functional magnetic Fe3O4 particles,with salophen as functional monomer,Th(Ⅳ) ion as template,ethylene glycol dimethacrylate (EGDMA) as the cross-linking and azodiisobutyronitrile (AIBN) as the initiator.The optimum conditions for absorption of Th(Ⅳ) ion on the magnetic imprinting material were discussed.The results show that the maximum absorption capacity of imprinting material is 42.54 μg/mg when the initial concentration is 70 μg/mL in 30min contact time at pH 4.5. the relative selectivity coefficient values of the synthesized adsorbent for Th(Ⅳ)/La(Ⅲ),Th(Ⅳ)/Ce(Ⅲ), and Th(Ⅳ)/U(Ⅵ) were 82.2,93.1 and 62.4 times greater than that of the non-imprinted matrix,respectively.It suggests that Th(Ⅳ) ion could be detection using the magnetic Th(Ⅳ)-imprinted polymer in the present of La(Ⅲ),Ce(Ⅲ) and U(Ⅳ). |
查看全文 查看/发表评论 下载PDF阅读器 |
关闭 |