生物质化学工程2018，Vol.52Issue(3)：1-8,8.DOI:10.3969/j.issn.1673-5854.2018.03.001
甲基橙印迹磁性壳聚糖聚合物的制备及吸附特性
Preparation and Adsorption of Methyl Orange Imprinted Magnetic Chitosan Polymer
摘要
Abstract
Magnetic chitosan( Fe3O4@CTS) microspheres were prepared through sol-gel method firstly.Then, a novel, magnetic molecularly imprinted polymers( MMIPs) were synthesized by aqueous solution polymerization with Fe3O4@CTS as support and functional monomer and methyl orange as template molecules.Characterizations of the obtained MMIPs were achieved by SEM, XRD, FT-IR and VSM.Batch adsorption experiments were performed to investigate the adsorption conditions, selectivity and reusability of the adsorption of MO on MIMPs.The results showed that the maximum adsorption capacity was 113.16 mg/g and equilibrium adsorption was achieved around 60 min observed at pH value 6.5 and temperature 25℃, and the MMIPs had specific adsorption capacity for MO compared with the non-imprinted magnetic particles( NIMPs) .Adsorption process could be well described by Langmuir adsorption isotherms and the kinetic data could be fitted with pseudo-second-order equation.Furthermore, the selectivity coefficient of MO and other dyes onto MMIPs indicated an overall preference with the maximum selectivity coefficient(K) of 2.85.Moreover, MMIPs could be separated by external magnet, which could be reused for 5 times with a high adsorption efficiency overall 90％after desorption.关键词
壳聚糖微球/磁性分子印迹聚合物/甲基橙/特异性吸附Key words
chitosan microspheres/magnetic molecularly imprinted polymers/methyl orange/specific adsorption分类
化学化工引用本文复制引用
李漫,蔡照胜,房桂干,梁龙,周静..甲基橙印迹磁性壳聚糖聚合物的制备及吸附特性[J].生物质化学工程,2018,52(3):1-8,8.基金项目
"十二五"国家科技支撑计划资助(2014BAD02B02) （2014BAD02B02）
江苏省生物质能源与材料重点实验室资助项目(JSBEM-S-201510) （JSBEM-S-201510）
江苏省自然科学基金资助项目(BK20160151) （BK20160151）
