摘要
以四氧化三铁(Fe_3O_4)/壳聚糖(CS)为载体,磺胺甲基嘧啶(SMR)和磺胺甲唑(SMZ)为复合模板分子,2-乙烯基吡啶(2-VP)为功能单体,采用表面印迹技术制得磺胺类抗生素(SAs)-磁性分子印迹聚合物(MMIPs)。通过红外光谱和磁饱和强度对合成材料进行了表征,静态和动态吸附实验考察了MMIPs对SAs的吸附选择性和结合速度。结果表明,复合模板-功能单体分子间存在多位点的协同作用,复合模板分子的引入优化了MMIPs的印迹孔穴,使其对7种SAs体现出较强的吸附能力和组选择性,吸附容量为11.67~16.22mg/g,印迹因子为3.410~4.303;MMIPs-模板分子9min就可达到吸附平衡状态。
Sulfonamides magnetic molecularly imprinted polymers（SAs-MMIPs）were prepared by surface imprinted technology using active Fe_3O_4-chitosan as the core and a mixture of sulfamethazine and sulfamethoxazole as mixed template molecules,2-vinylpyridine as functional monomer.The structure,morphology,magnetism,recognition properties and adsorption rate of MMIPs were characterized using fourier transform infrared spectroscopy,vibrating sample magnetometer,static and dynamic binding experiments respectively.The results showed that the multi-sites synergistic effects were generated between mixed templates and the functional monomer.Meanwhile the introduction of mixed templates optimized the imprinted cavities of MMIPs and caused the strong adsorption ability and selectivity for seven SAs.The maximum adsorption capacity（Qmax）and imprinted factors（IFi）were 11.67~16.22mg/g and 3.410~4.303 respectively.A fast adsorption rate（t=9min）was embodied.
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第6期144-146,共3页
New Chemical Materials
基金
黑龙江省教育厅项目(1253175)
