羟丙基-β-环糊精修饰磁性纳米材料吸附重金属性能研究  

Adsorption properties of hydroxypropyl-β-cyclodextrin modified magnetic nanocomposites on heavy metals

作　　者：张春芹[1] 龚爱琴[1] 姜业朝[1] 

机构地区：[1]扬州工业职业技术学院,江苏扬州225127

出　　处：《山西化工》2016年第4期4-6,19,共4页Shanxi Chemical Industry

基　　金：江苏省大学生实践创新课题(201513754017x)

摘　　要：合成了羟丙基-β-环糊精修饰的Fe_3O_4磁性纳米材料(HP-β-CDCP-MNPs),用红外光谱法、元素分析法、热重分析法等技术手段对合成的磁性纳米材料进行了表征,考察了其对重金属Pb^(2+)、Cd^(2+)、Co^(2+)的吸附,对pH、吸附时间、吸附温度等吸附条件进行了优化。结果发现,在优化条件下其对金属离子吸附能力为Pb^(2+)>>Cd^(2+)>Co^(2+),吸附在70min内能达到平衡,吸附容量分别为69.82、16.22、12.65mg/g。In this paper,hydroxypropyl-β-cyclodextrin polymer modified magnetic particles Fe_3O_4（HP-β-CDCP-MNPs）were prepared and applied to magnetic solid phase extraction of Pb^（2＋）,Cd^（2＋）and Co^（2＋）.The synthesized magnetic particles were characterized by Fourier transform infrared spectra,element analysis and thermal gravimetric analysis.Several variables affecting the adsorption such as pH,adsorption time and adsorption temperature were investigated.The results showed that under optimum conditions,HP-β-CDCP-MNPs could preferentially adsorb Pb^（2＋）with an affinity of Pb^（2＋）Cd^（2＋）Co^（2＋）.Batch adsorption equilibrium was reached in 70 min and maximum uptakes for Pb^（2＋）,Cd^（2＋）and Co^（2＋）were 69.82、16.22、12.65mg/g.

关 键 词：羟丙基-Β-环糊精 磁性纳米材料 重金属 

分 类 号：O433.5[机械工程—光学工程]