功能化磁性纳米粒子制备及其铀吸附性能研究  

Preparation and adsorption performance of functionalized nano-Fe_3O_4 for uranyl ions from aqueous solution

作　　者：廖琪[1] 李乐[2] 袁亚莉[1] 候少岩 成彬[2] 卢炜 LIAO Qi;LI Le;YUAN Ya-li;HOU Shao-yan;CHENG Bin;LU Wei(School of Chemistry and Chemical Engineering,University of South China,Hengyang 421001,China;School of Public Health,University of South China,Hengyang 421001,China)

机构地区：[1]南华大学化学化工学院,湖南衡阳421001 [2]南华大学公共卫生学院,湖南衡阳421001

出　　处：《应用化工》2018年第7期1336-1338,1341,共4页Applied Chemical Industry

基　　金：国家自然科学基金项目(11405081);湖南省重点研发计划项目(2018SK2029);湖南省自然科学基金项目(2017JJ3276);湖南省教育厅优秀青年项目资助(17B226)

摘　　要：制备了4-磺酰杯[6]芳烃修饰的Fe3O4磁性纳米粒子(MFS),利用MFS对铀废液进行吸附。其结构经红外(IR)、扫描电镜(SEM)、振动样品磁强计(VSM)、热综合分析仪(TGA)等进行表征,表明MFS的粒径在10~40 nm,饱和磁化强度为65 emu/g,具有超顺磁性和良好的热稳定性。在100 m L铀初始浓度2.5 mg/L,p H为6,吸附时间3.5 h,吸附剂用量0.015 g,温度50℃的条件下,最大吸附率为94.39%。由此可见,MFS是一种在放射性污染防控和铀资源循环利用领域极具应用前景的功能化磁性纳米材料。The removal of uranium ions and any other heavy metal ions from wastewater might be achieved via adsorption treatment techniques. In the one hand,Fe3 O4 magnetic nanoparticles（ MNPs） have large surface area,high adsorption rate for metal ions,and can be separated easily from magnetic liquid. And the other hand,calixarene with adjustable hole structure can form host-guest complexes with metal ions. 4-sulfonylcalix[6]arene has many active groups,and strong adsorptivity to uranyl ions. Through combining their both characteristics and advantages,4-sulfonylcalix[6]arene modified Fe3 O4 magnetic nanoparticles（ MFS） were prepared in this study. The structure of MFS was confirmed by infrared absorption spectrum（ IR）,scanning electron microscope（ SEM）,vibrating specimen magnetometer（ VSM）,hot integrated analyzer（ TGA） and so on,indicating that MFS had superparamagnetism and good thermal stability with10 ~ 40 nm particle size and 65 emu/g saturation magnetization. In addition,via the adsorption tests for uranium solution and the experiment of interfering ion,it can be seen that MFS has high adsorption rate,fast and easy magnetic separation,low energy consumption,good selectivity for uranium,and can be easily enriched and recycled efficiently. Thus,MFS has a certain application prospect for the treatment of uranium ions in the field of radioactive pollution prevention and control of uranium resources.

关 键 词：杯芳烃 四氧化三铁 功能材料 铀酰离子 吸附 

分 类 号：TQ028.5[化学工程] TQ209