Cu^(2+)磁性壳聚糖印迹粒子的制备及对Cu^(2+)的吸附  

Preparation of Magnetic Chitosan Cu^(2+) Imprinted Particles and the Adsorption of Cu^(2+)

作　　者：郝营[1] 杨清香[1] 齐连怀[1] 张翔[1] 汤凯[1] 朱海燕[1] 陈志军[1] 

机构地区：[1]郑州轻工业学院材料与化学工程学院,河南郑州450001

出　　处：《高分子材料科学与工程》2014年第5期154-158,共5页Polymer Materials Science & Engineering

基　　金：河南省高校可以创新人才支持计划资助项目(2008HASTIT019);国家自然科学基金资助项目(20976168;21271160)

摘　　要：采用一步共沉淀法和离子印迹技术,制备了Fe3O4-壳聚糖(Fe3O4-CTS)印迹粒子。通过X射线衍射、傅里叶红外光谱,振动样品磁强计、热重分析、Zeta电位等手段对Fe3O4-CTS印迹粒子及对比粒子进行结构和性能表征。研究了pH、吸附剂的量、Cu2+初始浓度、吸附时间及温度等不同因素对吸附性能的影响。结果表明,对于印迹粒子,pH=6,吸附时间为4 h,为较理想的吸附条件;当溶液中Cu2+的质量浓度为120 mg/g,吸附剂的质量为50 mg时,吸附基本达到了平衡,单位吸附量约为21.304 mg/g。Fe3O4-chitosan(Fe3O4-CTS) magnetic imprinted particles were synthesized by one-step coprecipitation and ion imprinting technique. The Fe3O4-CTS imprinted particles and black particles were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),Vibrating sample magnetometer(VSM),thermogravimetric analysis(TG) and zeta potential. The influence of the factors(pH,the amount of adsorbents,initial concentration of Cu2 +,contact time and temperature) on the adsorption capacity was investigated. Resulting,for the imprinted particles,the optimum condition is listed as following: pH of 6,adsorption time of 4 h. The adsorption gets the equilibrium under the condition of initial Cu2 +concentration of 120 mg/g,the amount of adsorbents of 50 mg. The adsorption capacity is 21. 304 mg/g.

关 键 词：Fe3O4-壳聚糖粒子 离子印迹 吸附 

分 类 号：O636.1[理学—高分子化学] O647.3[理学—化学]