| 赖氨酸修饰磁性Fe3O4纳米粒子的制备及其对Cu（Ⅱ）的吸附性能 |
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| 引用本文： | 程昌敬,刘东,张嫦.赖氨酸修饰磁性Fe3O4纳米粒子的制备及其对Cu（Ⅱ）的吸附性能[J].材料导报,2011,25(24):77-79,98. |
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| 作者姓名： | 程昌敬 刘东 张嫦 |
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| 作者单位： | 西南民族大学化学与环境保护工程学院,成都,610041 |
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| 基金项目： | 中央高校基本科研业务费专项资金，西南民族大学引进人才项目，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 |
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| 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。
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| 关 键 词： | 功能化Fe3O4纳米粒子 赖氨酸 Cu(Ⅱ) 吸附 Langmuir模型 |
Preparation and Adsorption Properties of Lysine-coated Magnetic Fe3O4 Nanoparticles for Cu( Ⅱ ) Ions |
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| CHENG Changjing,LIU Dong,ZHANG Chang.Preparation and Adsorption Properties of Lysine-coated Magnetic Fe3O4 Nanoparticles for Cu( Ⅱ ) Ions[J].Materials Review,2011,25(24):77-79,98. |
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| Authors: | CHENG Changjing LIU Dong ZHANG Chang |
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| Affiliation: | (School of Chemistry and Environment Protection Engineering,Southwest University for Nationalities,Chengdu 610041) |
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| Abstract: | 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 characte-rized 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 0.0346L/mg. |
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| Keywords: | functionalized Fe3O4 nanoparticles lysine copper(Ⅱ) ions adsorption Langmuir isotherm |
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