西北师范大学学报（自然科学版）2017，Vol.53Issue(2)：57-64,8.DOI:10.16783/j.cnki.nwnuz.2017.02.011
基于凹凸棒/四氧化三铁的磁性分子印迹聚合物的制备及其对咖啡因的吸附性能
The preparation and property of magnetic molecularly imprintedpolymer based on attapulgite/Fe3O4
摘要
Abstract
Magnetic molecularly imprinted polymer(MMIPs) with core-shell structure for selectively recognizing cafeine is prepared by a co-precipitation method using ATP/Fe3O4 as cores,acrylamide as functional monomer,ethylene dimethacrylate as linkage agent and azo-iso-butyronitrile as initiator.The prepared polymer is characterized by Fourier-transform infrared spectrometer(FT-IR),scanning electron microscope(SEM),thermogravimetric analysis(TGA) and X-ray diffraction(XRD).The results show that the adsorption capacity of MMIPs for caffeine reaches 2.94 mg·g-1 at 298 K,and the adsorption process obeys the Langmuir isotherm model and the pseudo-second-order kinetic equation.The polymer has high affinity and selectivity towards caffeine,and good regeneration as well.关键词
咖啡因/磁性分子印迹聚合物/核壳结构/吸附Key words
caffeine/magnetic molecule imprinted polymer/core-shell structure/adsorption分类
化学化工引用本文复制引用
杨武,卢秀,郭昊,薛瑞,郭婧..基于凹凸棒/四氧化三铁的磁性分子印迹聚合物的制备及其对咖啡因的吸附性能[J].西北师范大学学报（自然科学版）,2017,53(2):57-64,8.基金项目
国家自然科学基金资助项目(21665024,20873101) （21665024,20873101）
