磁性介孔碳喹诺酮印迹聚合物的制备及性能研究

Preparation and performance of magnetic mesoporous carbon quinolone molecularly imprinted polymers

以恩诺沙星(ENR)和环丙沙星(CIP)为模板分子,Fe_(3)O_(4)/CO-CS-CH=CH_(2)、丙烯酰胺(AM)为双功能单体,乙二醇二甲基丙烯酸酯(EGDMA)为交联剂,偶氮二异丁腈(AIBN)为引发剂,乳液聚合法合成了磁性介孔碳喹诺酮印迹聚合物(MIPs)。采用X射线粉末衍射仪(XRD)、全自动比表面孔径分析仪(BET)、红外光谱(FTIR)、扫描电镜(SEM)和动静态吸附实验对其性能进行了研究。结果表明,成功合成了MIPs,为平均孔径4.678 nm的分散均匀球体,比表面积为452 m^(2)/g;其对CIP和ENR的饱和吸附容量分别为40和29.4mg/g,高于非印迹聚合物(NIPs)对CIP和ENR的最大吸附容量(18.4和17.8 mg/g);MIPs对CIP和ENR的吸附符合准二级动力学模型;MIPs对CIP和ENR表现出良好的选择性吸附;MIPs稳定性好、使用寿命长。

Magnetic mesoporous carbon quinolone molecularly imprinted polymers(MIPs)was prepared by the emulsion molecular imprinting method using enrofloxacin(ENR),ciprofloxacin(CIP)as templates,acrylamide(AM),Fe_(3)O_(4)/CO-CS-CH=CH_(2) as functional monomer,ethylene glycol dimethacrylate(EGDMA)as the crosslinker,azoisobutyronitrile(AIBN)as initiator.The MIPs was characterized by XRD,BET,FTIR,SEM,and dynamic and static adsorption experiments.The results showed that MIPs was successfully synthesized,MIPs was a uniformly dispersed sphere with an average pore size of 4.678 nm,the specific surface area of MIPs was 452 m^(2)/g;the maximum adsorption capacity of the MIPs for CIP and ENR was 40 and 29.4 mg/g,respectively,and higher than the maximum adsorption capacity of non-imprinted polymers(NIPs)for CIP and ENR(18.4 and 17.8 mg/g);the adsorption of MIPs for CIP and ENR conforms to the secondary dynamic models;MIPs shows good selective adsorption to CIP and ENR;MIPs has good stability and long service life.