高比表面积纳米α-Fe_2O_3球形团聚体的制备  

THE PREPARATION OF SPHERICAL AGGREGATES OF HEMATITE Fe_2O_3 NANOPARTICLES WITH HIGH SURFACE AREA

作　　者：李华[1] 梁健[2] 肖国先[1] 

机构地区：[1]苏州大学材料与化学化工学部无机非金属系,苏州215021 [2]景德镇陶瓷学院材料学院,景德镇333001

出　　处：《陶瓷学报》2009年第3期314-317,共4页Journal of Ceramics

基　　金：苏州大学预研基金支持(编号:Q3109807)

摘　　要：采用水热合成法合成了具有较高比表面积的纳米α-Fe2O3的球形团聚体。得到的材料同时采用XRD、TEM、N2气吸附脱附等手段进行表征。结果表明,这些球形团聚体尺寸均匀,直径均在40nm左右;每个团聚体均由大量纳米粒子团聚得到,这些团聚体具有较好的分散性,所得材料的比表面积高达123.4m2/g。此外,还对合成条件,如水热合成温度、表面活性剂浓度进行了探讨。Spherical aggregations of Fe2O3 nanoparticles with high surface area were synthesized by a simple route: hydrothermal treatment combined with template assistant. A complete morphological characterization of the sample was performed using XRD, TEM, and N2 sorption isotherms. The resulted sample shows these well-dispersed aggregates are well-crystallized α-Fe2O3 with uniformed size around 40 nm in diameter, and each spherical aggregate was composed of hundreds of nanoparticles through which pores were formed....

关 键 词：球形团聚体 纳米Α-FE2O3 水热合成 多孔 

分 类 号：TB381[一般工业技术—材料科学与工程]