自组装铁基印迹聚合物的表征及吸附性能研究

Characterization and Adsorption Behaviors of Self-Assembled Fe Based Molecularly Imprinted Polymer

采用固相法自组装铁基印迹聚合物(M IP),并通过XRD与表面滴定手段对其进行表征及研究其吸附性能,结果表明:(1)M IP结晶完好,晶胞系数皆为a=5.036,b=5.036,c=13.749,粒径为28.5 nm;(2)Fe3+与C6H6O质量比2:1与4:1组装成的微粒表面滴定拟合参数分别为:Nt=7.24×10-5mol.g-1,pKa1=6.77,pKa2=9.62;Nt=7.08×10-5mol.g-1,pKa1=6.62,pKa2=9.59;(3)4:1苯酚模板Fe2O3M IP的吸附性能较优,其投加量为0.5g时吸附效果最好。

Self-assembled Fe based molecularly imprinted polymer was systhesized by solid-phase method.The prepared samples were charaeterized by XRD and surface acid-base titration.The results showed that： the MIP had high purity and intact crystallinity,their crystal cell coefficient were a=5.036,b=5.036,c=13.749,crystallite were 71.2 nm,the optimal parameters of different quality of phenol template α-Fe2O3 MIP were Nt=7.24×10-5 mol·g-1,pKa1=6.77,pKa2=9.62;Nt=7.08×10-5 mol·g-1,pKa1=6.62,pKa2=9.59,4：1 phenol template α-Fe2O3 MIP had higher adsorption degradation rate,then in this study it can be determined that the appropriate dosage of phenol template α-Fe2O3 MIP was 0.5 g.