Fe3O4@MgO纳米复合材料的制备及其对Pb2+的吸附性能

Fe₃O₄@MgO纳米复合材料的制备及其对Pb²⁺的吸附性能

详细信息

1. The 712 Research Institute, CSIC, Wuhan 430064, China;
2. Huazhong University of Science and Technology, State Key Laboratory of Materials Processing and Die &Mould Technology, Wuhan 430074, China

摘要: 采用两步化学沉淀法制备了Fe₃O₄@MgO纳米复合材料,研究了纳米复合材料对Pb²⁺的吸附性能。结果表明,所制备的复合材料具有较高的顺磁性和稳定性,其饱和磁化强度为58.07 emu/g,初始氧化增重温度为125℃,对Pb²⁺有较好的吸附能力,在50 min内可以达到吸附平衡,最大吸附量为711.5 mg/g,其吸附过程符合准二级动力学模型和Langmuir等温吸附模型。
- Fe₃O₄@MgO /
- 纳米复合材料 /
- 磁性材料 /
- 吸附性能
Abstract: Fe₃O₄@MgO nanocomposites were prepared by two-step chemical precipitation method. The adsorption properties of nanocomposites for Pb²⁺ were investigated. The results show that the prepared composites have super paramagnetism and high stability, and the saturation magnetization and the initial temperature of oxidation are 58.07emu/g and 125 ℃, respectively. The as-obtained composites have excellent adsorption performance for Pb²⁺ with the maximum adsorption capacity of 711.5 mg/g, and the adsorption equilibrium can be reached within 50 min. The adsorption process well followed the pseudo-second-order kinetic model and Langmuir isotherm model.
- Fe₃O₄@MgO /
- nanocomposites /
- magnetic materials /
- adsorption properties