A Novel Preparation Method for Magnetic Nanoparticles and Their Characterization
Using a process in FeCl2/NaOH or FeCl2 solution,the γ-Fe2O3,γ-Fe2O3/Ni2O3 nanoparticles were prepared from α-FeOOH,FeOOH/Mg (OH)2 and FeOOH/Ni(OH)2 precursor produced by precipitation.The precursor and as-prepared nanoparticles were characterized by vibrating sample magnetometer (VSM),X-ray diffraction (XRD),energy disperse X-ray spectroscopy (EDX),X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM).A new transition induced chemically for preparing oxide nanoparticles is revealed.The as-prepared nanoparticles can adsorb FeCl3/FeCl2 to form an inert surface,which can help improve their chemical stability and prevent aggregation.The chemically induced transition in FeCl2 solution can be part of a new route for the preparation of single phase or composite oxide nanopartocles by the precipitation method.
precipitation hydroxyl precursor oxide nanoparticle
Jun FU Lihua LIN Jian LI
Southwest University, Chongqing, China, 400715
国内会议
重庆
英文
46-50
2011-11-16（万方平台首次上网日期，不代表论文的发表时间）