摘要
采用表面离子印迹技术,以磁性Fe3O4@SiO2微球为载体,Zn（Ⅱ）为模板,二甲基丙烯酸乙二醇酯为交联剂,合成了磁性锌（Ⅱ）离子表面印迹MAA-SALO聚合物。采用FT-IR、VSM和SEM对产物进行了表征。通过吸附实验表明,与磁性非印迹聚合物相比,印迹聚合物对Zn（Ⅱ）具有良好的吸附和选择识别能力。当温度为291-297K时,在最佳吸附pH 6.0下,可在40min达到吸附平衡,吸附过程能较好地遵循准二级动力学模型,最大吸附容量为52.69mg/g,热力学实验表明吸附是吸热过程,印迹聚合物对Zn（Ⅱ）的吸附行为符合Langmuir模型。
The magnetic Zn （Ⅱ） ion-imprinted MAA-SALO polymer was prepared by surface ion imprinting technique. The polymer prepared used magnetic Fe3O4 @SiO2 microspheres as supporter, Zn（Ⅱ） ion as template, ethylene glycol dimethacrylate as the crosslinker. The structures of products were characterized by FT-IR,VSM and SEM. The adsorption experiments showed that the polymer was employed successfully in comparison with nonqmprinted polymer. When the temperature was in a range of 291 K to 297 K,and the optimized pH value of 6.0,the adsorption reached to equilibrium within the period of 40min. The sorption followed pseudo-second order kinetics, the maximum adsorption capacity reached about 52.69mg/g. Thermodynamic experiment showed that the adsorption was a endothermic process for Zn（Ⅱ）. The experimen tal data followed the Langmuir adsorption model.
出处
《化工新型材料》
CAS
CSCD
北大核心
2015年第3期132-135,139,共5页
New Chemical Materials
基金
国家自然科学基金(20906018)
河北省自然科学基金资助项目(20100000027)
