高纯ZnAl_2O_4纳米颗粒的制备及其微结构分析  

Preparation and Microstructure Analysis of High-purity ZnAl_2O_4 Nanoparticles

作　　者：王骏[1] 徐波[1] 李生娟[2] 赵思丽 WANG Jun;XU Bo;LI Shengjuan;ZHAO Sili(College of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;College of Material Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海理工大学材料科学与工程学院,上海200093

出　　处：《材料科学与工程学报》2017年第6期915-920,共6页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(51402192);上海市大学生创新资助项目(1013310201)

摘　　要：将机械力化学与超声波化学相结合制备出高纯度、结晶性良好的尖晶石型ZnAl_2O_4纳米颗粒。分析了样品的表面形貌、晶体结构及微观结构。研究结果表明:当焙烧温度为600~900℃时,ZnO与γ-Al_2O_3固相反应制备出高纯度、结晶性良好的尖晶石型ZnAl_2O_4纳米颗粒。随着焙烧温度的升高,材料的致密度增大,结晶度提高,平均孔径依次增大,比表面积明显下降,孔隙率降低。High-purity ZnAl2O4 spinel nanoparticles with good crystallinity were synthesized through the combining method of mechanochemistry and sonochemistry.The features including surface morphology,crystal structure,chemical components and microstructure of the samples were characterized by powder X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）and specific surface area analyzer（BET）.The results indicate that ZnAl2O4 nanoparticles with high purity and good crystallinity are obtained by the solid state reaction of ZnO andγ-Al2O3 nanoparticles as the roasting temperature from 873 Kto 1173 K.With the increase of the roasting temperature,the density of the material is enhanced,the crystallinity and the average pore size increase,and the specific surface area and the porosity decrease.

关 键 词：ZnAl2O4纳米颗粒 机械力化学 超声波化学 固相反应 

分 类 号：TB34[一般工业技术—材料科学与工程]