磁性壳聚糖表面离子液体固定化及其 对丙烯酰胺吸附性能研究

以Fe3O4作为磁性纳米粒子,悬浮交联法制备磁性壳聚糖微球;以戊二醛作为交联剂在磁性壳聚糖微球表面固定离子液体;利用紫外分光光度法研究磁性壳聚糖固定化离子液体对丙烯酰胺的吸附性能.吸附动力学实验表明:2 h吸附容量为1.45 mg/g,3 h吸附基本达到平衡.结果显示:制备的磁性壳聚糖固定化离子液体对丙烯酰胺具有良好的吸附性能.

Preparation of Magnetic Chitosan Immobilized with Ionic Liquid and Its Adsorption Ability Toward Acrylamide

Preparation of magnetic chitosan immobilized by ionic liquid and the adsorption capacity for acrylamide were studied.Magnetic chitosan was prepared by suspension process using Fe3O4 as magnetic nanoparticles and immobilized by ionic liquid using glutaraldehyde as cross-linker.The adsorption of magnetic chitosan immobilized with ionic liquid toward acrylamide was studied by ultraviolet spectrophotometry.The experiment of adsorption kinetics showed that the adsorption capacity of magnetic chitosan immobilized with ionic liquid toward acrylamide was 1.45 mg·g-1 after shaking for 2 h,and the adsorption reaction reached balance after shaking for 3 h.It indicated that magnetic chitosan immobilized with ionic liquid had good adsorption property toward acrylamide.