摘要
结合分子印迹技术,以多孔碳微球(P-CMSs)为载体,通过表面修饰后,以二苯并噻吩(DBT)为模板分子,甲基丙烯酸为功能单体,二甲基丙烯酸乙二醇酯为交联剂,制备得到P-CMSs表面分子印迹聚合物(MIP/P-CMSs);通过场发射扫描电子显微镜和傅里叶红外光谱对产物形貌和结构进行表征;通过气相色谱仪对MIP/P-CMSs的吸附动力学、吸附等温线和选择性吸附性能进行测试。结果表明,MIP/P-CMSs对DBT的最大吸附量为123.7 mg/g,吸附平衡时间为150min;与P-CMSs相比,印迹结构的引入提高了吸附容量和选择性,且吸附过程满足准二级动力学方程和Freundlich等温方程。本研究为油品深度脱硫提供了一种新的思路。
Based on molecular imprinting technique,molecularly imprinted polymer（MIP）on the surface of modified porous carbon microspheres（P-CMSs）was prepared by using dibenzothiophene（DBT）as template molecule,methyl acrylic acid as functional monomer and ethylene glycol dimethacrylate as crosslinker.Field emission scanning electron microscopy and Fourier transformation infrared spectrometry were used to characterize the morphology and structure of the samples.The adsorption behaviors,including adsorption kinetics,isotherms and competitive adsorption,were detected in detail by gas chromatography.The results show that MIP/P-CMSs exhibited excellent selectivity towards DBT with higher binding capacity compared with P-CMSs.The adsorption equilibrium of MIP/P-CMSs was achieved within 150 min,and the adsorption capacity reached 123.70mg/g.In addition,the adsorption of DBT on MIP/P-CMSs followed the pseudo-second-order model and Freundlich isotherm.
出处
《太原理工大学学报》
CAS
北大核心
2016年第2期150-155,共6页
Journal of Taiyuan University of Technology
基金
国家自然科学基金资助项目:洋葱状富勒烯基复合荧光量子点体系的构建(21176169)
山西省研究生优秀创新基金资助项目(20123029)
太原理工大学校青年科技基金资助项目(2014TD015)
关键词
分子印迹聚合物
多孔碳微球
吸附
选择性
molecularly imprinted polymer
porous carbon microspheres
adsorption
selectivity
