摘要
构建了金属有机骨架MIL-101的后合成印迹修饰法以改善其对松脂素二糖苷(PDG)的吸附选择性。MIL-101经过氨基化修饰及表面接枝制备了金属有机骨架-分子印迹复合材料MIPs@ED-MIL-101,用X射线衍射法、红外光谱法及扫描电镜分析对MIL-101的晶体结构、表面化学功能基团及结构形貌进行表征。测试了MIPs@ED-MIL-101对模板分子的吸附动力学、选择性及固相萃取性能。结果表明,经印迹修饰后的MIL-101对PDG的吸附性能大幅提高,且对模拟混合物中的PDG也具有较高的竞争吸附选择性。当以MIPs@ED-MIL-101为吸附剂从杜仲提取物中提取和分离PDG时,产品纯度85.3%,且复合材料多次重复使用后对目标化合物的吸附量变化不大。
A molecular imprinted polymer(MIP)-modified MIL-101 metal-organic frame composites(MIPs@ED-MIL-101)was fabricated for selective analysis of pinoresinol diglucosides(PDG).This PDG-imprinted MIPs@ED-MIL-101 composite was characterized in crystal structure,surface chemical group and particle morphology by XRD,FT-IR and SEM.The adsorption kinetics,selectivity and solid phase extraction performance of MIPs@ED-MIL-101 composite for template molecules were tested.Results showed that the MIPs@ED-MIL-101 composite has greatly improved adsorption performance for PDG,and can be used to selectively adsorb PDG from the simulated mixture.When this MIPs@ED-MIL-101 composite was used as adsorbent for the extraction and separation of PDG from crude extract of Eucommia ulmoides,the purity of obtained product was 85.3%.Also,this novel material can also be reused for many times with a slight loss in adsorption capacity.
作者
田海希
毛琳
许国强
罗晓玥
李辉
Tian Haixi;Mao Lin;Xu Guoqiang;Luo Xiaoyue;Li Hui(College of Chemistry and Chemical Engineering,Jishou University,Jishou,416000;National and Local United Engineering Laboratory of Integrative Utilization of Eucommia ulmoides,Jishou University,Jishou,416000)
出处
《化学通报》
CAS
CSCD
北大核心
2021年第6期571-577,513,共8页
Chemistry
基金
国家自然科学基金项目(21865011)
湖南省湘西自治州科技创新重点研发计划项目(2019SF2003)
湖南省创新平台开放基金项目(16K071)
吉首大学研究生创新基金项目(Jdy22)资助。
关键词
金属有机骨架MIL-101
后合成修饰
印迹修饰
松脂素二糖苷
吸附
Metal organic frameworks MIL-101
Post-synthetic modification
Imprint modification
Pinoresinol diglucoside
Adsorption
