化工环保2024，Vol.44Issue(5)：638-643,6.DOI:10.3969/j.issn.1006-1878.2024.05.006
Ni2+印迹磁性交联壳聚糖微球的选择性吸附性能
Selective adsorption performance of Ni2+imprinted magnetically crosslinked chitosan microspheres
摘要
Abstract
Ni2+imprinted magnetically cross-linked chitosan microspheres were prepared with Ni2+as the template ion,chitosan as the main raw material,Fe3O4 as the magnetic core,and epichlorohydrin as the cross-linking agent.The characterization results show that the microspheres exhibit a three-dimensional structure with many wrinkles on the surface and a decrease in crystallinity,which is beneficial to adsorb Ni2+.According to the selective adsorption results of binary metal ion systems,the microspheres have good selective adsorption performance for Ni2+in Ni2+-Zn2+,Ni2+-Cu2+,and Ni2+-Cr2+binary systems with equal and different concentrations.The selective adsorption coefficient rises as the concentration of Ni2+increases.The selective adsorption results of the Ni2+-Zn2+-Cu2+-Cr2+quaternary metal ion system indicate that the equilibrium adsorption capacity of microspheres for Ni2+is significantly higher than the other three metal ions.The order of equilibrium adsorption capacity is Ni2+>Cu2+>Zn2+>Cr2+.The selective adsorption coefficients of Ni2+relative to Cu2+,Zn2+,and Cr2+are 81.545,156.529,and 544.720,respectively.关键词
壳聚糖微球/印迹/交联/选择性吸附性能Key words
chitosan microsphere/imprinted/crosslinking/selective adsorption performance分类
资源环境引用本文复制引用
傅明连,陈彰旭,朱丹琛..Ni2+印迹磁性交联壳聚糖微球的选择性吸附性能[J].化工环保,2024,44(5):638-643,6.基金项目
福建省自然科学基金项目(2022J011163) （2022J011163）
福建省科技特派员专项资金项目(2023年). （2023年）
