现代食品科技2017，Vol.33Issue(5)：135-140,6.DOI:10.13982/j.mfst.1673-9078.2017.5.022
(壳聚糖/γ-Fe2O3)@C磁性复合材料表面印迹聚合物选择性吸附2,4,5-TCP的研究
A Study on Preferential Adsorption of 2,4,5-Trichlorophenol by an Imprinted Polymer on the Surface of a (Chitosan/maghemite)@C Magnetic Composite
摘要
Abstract
A carbon-based magnetic carbon sphere of (chitosan/maghemite)@C was synthesized by emulsion polymerization,and vinyl groups were introduced into its surface.The imprinted polymer on the magnetic carbon sphere surface was prepared using 2,4,5-trichlorophenol (TCP) as a template molecule,methacrylic acid (MAA) as a functional monomer,and ethylene glycol dimethylacrylate (EGDMA) as the cross-linker.The morphology,structure,and other physicochemical properties of the formed material were characterized by means of a scanning electron microscope (SEM),ultraviolet (UV) spectrophotometer,vibration sample magnetometer (VSM),and thermogravimetric analyzer (TGA).Thermostability and magnetic stability of the material were studied,and the adsorption performance and selectivity of the material as an adsorbent for 2,4,5-TCP were investigated.The results indicated that saturation magnetization values of the magnetic carbon sphere and magnetic carbon sphere surface imprinted polymers (MMIPs) were 4.3 and 1.7 emu/g,respectively.The equilibrium adsorption data conformed to the Freundlich isotherm model,equilibrium adsorption capacity was ～200 mg/g,and the kinetics followed a second-order kinetic equation.The adsorption equilibrium time was approximately ten minutes,and the imprinted sorbent showed optimal adsorption on the template molecule,with significant specific adsorption.关键词
磁性复合材料/智能印迹/三氯酚/选择吸附Key words
magnetic composite material/intelligent imprinting/trichlorophenol/preferential adsorption引用本文复制引用
才洪美,潘建明..(壳聚糖/γ-Fe2O3)@C磁性复合材料表面印迹聚合物选择性吸附2,4,5-TCP的研究[J].现代食品科技,2017,33(5):135-140,6.基金项目
国家质检总局科研项目(20151K145) （20151K145）
