一步还原法制备纳米铁粉（英文）  

Synthesis of Fe Nanoparticles via One-Step Reduction Method

作　　者：胡平[1,2] 康路[1] 杨军[1] 杨帆[1,2] 王快社[1,2] 杜金晶[1] 杨占林[1] 曹维成[3] 刘东新[3] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055 [2]西安建筑科技大学功能材料加工国家地方联合工程研究中心,陕西西安710055 [3]金堆城钼业股份有限公司,陕西西安710077

出　　处：《稀有金属材料与工程》2016年第12期3112-3114,共3页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51404181)

摘　　要：采用一种新方法——一步还原法制备了纳米铁粉颗粒。过量的柠檬酸在620℃有助于形成纯相、结晶高的α-Fe。纳米铁粉被X射线衍射(XRD)、透射电子显微镜(TEM)、振动样品磁强计(VSM)进行了表征,形貌观察表明产物形成了粒径在30 nm左右的近球形的纳米颗粒。磁滞回线说明了纳米铁颗粒的饱和磁化强度为198.97 A·m^2/kg,作为磁性材料具有很好的铁磁性能。一步还原法生产的颗粒粒径分布窄、可控、流程短,可用于大规模生产。Fe nanoparticles were synthesized via a novel one-step reduction method. The excessive citric acid helps to obtain pure and high crystallinity α-Fe at the appropriate temperature（620 ℃）. The Fe nanoparticles were characterized by the X-ray diffraction, transmission electron microscopy（TEM） and vibrating sample magnetometer（VSM）. The morphological characterization indicates that the Fe nanoparticles present spherical shape with diameter of 30 nm. The magnetization hysteresis loops reveal the high saturation magnetization（M_s=198·97 A·m^2/kg） and the good ferromagnetic behavior of the magnetic materials. The one-step reduction method for nanoparticles synthesis has the advantages of controllable, short process, large-scale production, and will be an important method of producing nanoparticles.

关 键 词：纳米铁 一步还原法 球形 铁磁行为 磁性材料 

分 类 号：O614.811[理学—无机化学] TB383[理学—化学]