Static magnetic field-assisted synthesis of Fe3O4 nanoparticles and their adsorption of Mn(Ⅱ) in aqueous solution

作     者：Yong Liu Jianfei Bai Hongtao Duan Xiaohong Yin 

作者机构：College of Chemistry and Chemical Engineering Tianjin University of Technology Tianjin 300384 China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion Tianjin University of Technology Tianjin 300384 China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2017年第25卷第1期

页      面：32-36页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 07[理学] 0817[工学-化学工程与技术] 070205[理学-凝聚态物理] 08[工学] 070304[理学-物理化学(含∶化学物理)] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China(No.41201487) the Natural Science Foundation of Hebei Province(No.2014202074) 

主　　题：纳米Fe3O4 Mn(Ⅱ) 静态磁场 辅助合成 吸附实验 水溶液 Fe3O4纳米粒子 磁性纳米粒子 

摘      要：A facile method for synthesis of the magnetic Fe_3O_4 nanoparticles was *** nanoparticles were prepared via co-precipitation method with(PMF) and without(AMF) 0.15 T static magnetic *** effects of magnetic field on the properties of magnetic nanoparticles were studied by XRD,TEM,SEM,VSM and *** results showed that the magnetic field in the co-precipitation reaction process did not result in the phase change of the Fe_3O_4 nanoparticles but improved the *** morphology of Fe_3O_4 nanoparticles was varied from random spherical particles to rod-like cluster *** VSM results indicated that the saturation magnetization value of the Fe_3O_4 nanoparticles was significantly improved by the magnetic *** BET of Fe_3O_4nanoparticles prepared with the magnetic field was larger than the control by 23.5%.The batch adsorption experiments of Mn(Ⅱ) on the PMF and AMF Fe_3O_4 nanoparticles showed that the Mn(II) equilibrium capacity was increased with the pH value *** pH 8,the Mn(Ⅱ) adsorption capacity for the PMF and AMF Fe_3O_4 was reached at 36.81 and 28.36 mg·g^(-1),*** pseudo-second-order model fitted better the kinetic models and the Freundlich model fitted isotherm model well for both PMF and AMF Fe_3O_*** results suggested that magnetic nanoparticles prepared by the magnetic field presented a fairly good potential as an adsorbent for an efficient removal of Mn(Ⅱ) from aqueous solution.