期刊论文

Preparation and adsorption performance of functionalized nano-Fe3 O4 for uranyl ions from aqueous solution

中文

应用化工

1671-3206

2018

47

7

1336-1338,1341

10.16581/j.cnki.issn1671-3206.20180619.011

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

本校为第一机构

制备了4-磺酰杯[6]芳烃修饰的Fe_3O_4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 mL铀初始浓度2.5 mg /L,pH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,Fe_3O_4 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 Fe_3O_4 magnetic n...