化学共沉淀法ITO纳米粉末的制备与表征  

Preparation and Characterization of Nanosize Indium-Tin-Oxide Powder by Chemical Co-precipitation

作　　者：段雨露[1,2] 周丽旗 肖丹[1] 徐国富[1,3,2] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]中南大学有色金属材料科学与工程教育部重点实验室,湖南长沙410083 [3]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《湖南有色金属》2013年第5期48-54,共7页Hunan Nonferrous Metals

基　　金：中南大学粉末冶金国家重点实验室开放基金资助课题(FMYJ2011-3)

摘　　要：采用化学共沉淀法来制备ITO纳米粉末，探讨了反应终点pH值（分别为7，8及9）和煅烧温度（分别为350℃，650℃，750cc及850℃）对ITO粉体性能的影响，借助TG—DSC、XRD、SEM、HRTEM、FT-IR等分析手段对粉体进行了表征。得到如下结论：在液相中加入硅酸钠，反应温度为60℃，反应终点pH值为8，老化制度为60min，煅烧制度为750℃／2h的工艺条件下，所制得的ITO纳米粉不含SnO2相，呈显著的单相结构，是一种立方结构的In2O3固溶体；粉体粒径在30—60nm之间，比表面积为34．26m^3／g，形貌为近球形，颗粒均匀，且分散性能良好，在波数840—3164cm。范围内对红外光的反射率高达66％～94％。ITO nanopowder was preparated by liuquid chemical co-precipitation in the paper. The effects of pH of re- action end （7,8 and 9 ） and calcining temperature （350 ℃, 650℃ ,750 ℃ and 850 ℃, respectively） on the proper- tie of ITO powder was investigated. It was characterized by TG-TDSC, XRD, SEM, HRTEM, FT-IR etc. The main re- sults are as follows ： Under the conditions of by adding sodium silicate in the liquid phase, reaction temperature of 60 ℃, the reaction end point at pH 8, the aging time for 60 min, calcined system for 2 h and 750 ℃, the obtained ITO nano powder is In203 solid solution with a cubic structure, and is the single structure without SnO2 phase. ITO powder was prepared ,which is nearly spherical, uniform particles and good dispersibility, particle size between 30 -60 nm, specific surface area of 34. 26 m2/g. And it has a high reflectivity as high as 66% - 94% to infrared light in the range of the wave number of 840 to 3 164 cm^-1.

关 键 词：纳米粉末 化学共沉淀 前驱体 ITO 

分 类 号：TG156.8[金属学及工艺—热处理]