摘要
采用化学共沉淀法制备磁性Fe3O4纳米粒子,通过在磁性Fe3O4纳米粒子表面接枝赖氨酸,制备一种新型磁性纳米吸附剂。通过TEM、FT-IR、XRD、VSM对其进行表征,着重研究了其对Cu(Ⅱ)离子的吸附性能。结果表明,溶液pH值能显著影响吸附剂对Cu(Ⅱ)的吸附效果,pH为5时其效果最佳。等温吸附数据符合Langmuir模型,T=298K、pH=5、V=5mL时,吸附剂的饱和吸附容量qm=22.42mg/g,吸附常数为0.0346L/mg。
A novel magnetic nano-adsorbent was prepared by covalent binding of lysine onto the surface of magnetic Fe3O4 nanoparticles, which was fabricated by a chemical coprecipitation method. The adsorbent was characterized by transmission electron microscopy（TEM）, Fourier transform infrared spectroscopy（FT-IR）, X-ray diffraction patterns（XRD） and vibrating sample magnetometer（VSM）. Moreover, the adsorption properties of the magnetic nano-adsorbent for Cu（ Ⅱ ） ions was also investigated. The results showed that the adsorption capability was significantly affected by pH, and the adsorption capacity was best at pH = 5. The adsorption data obeyed the Langmuir equation with a maximum adsorption capacity of 22.42mg/g and a Langmuir adsorption equilibrium constant of 0. 0346 L/rag.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2011年第24期77-79,98,共4页
Materials Reports
基金
中央高校基本科研业务费专项资金(10NZYZJ09)
西南民族大学引进人才项目(2009RC008)
西南民族大学化学一级学科硕士点建设资金
西南民族大学2011年学生创新项目(F201112001)
