摘要
利用可逆加成-断裂链转移(reversible addition fragmentation chain transfer,RAFT)聚合技术,以氧化石墨烯/Fe_(3)O_(4)(GO@Fe_(3)O_(4))为载体,内分泌干扰素17β-雌二醇为模板分子,成功制备磁性氧化石墨烯基17β-雌二醇分子印迹复合膜(GO@Fe_(3)O_(4)-MIP)。高倍透射电镜(HRTEM)、原子力显微镜(AFM)、振动样品磁强计(VSM)等表征结果表明,所制备的GO@Fe_(3)O_(4)-MIP的磁强度为12.89 A·m^(2)·kg^(-1),其厚度均一,约为6.45 nm。吸附性能实验研究表明,GO@Fe_(3)O_(4)-MIP对17β-雌二醇的吸附平衡时间为30 min,最大吸附量为28.62 mg/g,证实了GO@Fe_(3)O_(4)-MIP对17β-雌二醇具有较高的吸附效率和良好的吸附性。
The magnetic functionalized graphene based 17β-estradiol molecularly imprinted composite membrane(GO@Fe_(3)O_(4)-MIP)was successfully prepared by reversible addition fragmentation chain transfer(RAFT)polymerization technique using GO@Fe_(3)O_(4) as carrier and 17β-estradiol as template molecule.High resolution transmission electron microscopy (HRTEM) and atomic force microscope(AFM),vibrating sample magnetometer (VSM) were employed to characterize the as-prepared samples.The results show that the calculated magnetic property of GO@Fe_(3)O_(4)-MIP is 12.89 A·m^(2)·kg^(-1) and the thickness is about 6.45 nm.The adsorption equilibrium time of GO@Fe_(3)O_(4)-MIP on 17β-estradiol is 30 min,the maximum adsorption capacity is 28.62 mg/g.These findings confirm that GO@Fe_(3)O_(4)-MIP has high adsorption efficiency and good adsorption selectivity for 17β-estradiol.
作者
李颖
雷蕊
徐文凯
朱小雪
黄艳凤
LI Ying;LEI Rui;XU Wen-kai;ZHU Xiao-xue;HUANG Yan-feng(School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China;State Key Laboratory of Separation Membranes and Membrane Processes,Tiangong University,Tianjin 300387,China)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2021年第6期170-177,共8页
Journal of Materials Engineering
基金
国家自然科学基金项目(21106101,21475095)
天津市自然科学基金项目(13 JCQNJC0630)
中国博士后基金项目(2013M540281)。
作者简介
通讯作者:李颖(1979-),女,副教授,博士,主要从事纳米材料、电化学传感器的研究工作,联系地址:天津市西青区宾水西道399号天津工业大学环境科学与工程学院(300387),E-mail:LiYing_791190@163.com。
