络盐法制备纳米晶铟锡氧化物(ITO)粉末  

Preparation of Indium Tin Oxide(ITO) Nanocrystalline by Complex Salt Method

作　　者：陈林[1] 吴伯麟[1] 

机构地区：[1]桂林工学院有色金属及材料加工新技术教育部重点实验室

出　　处：《桂林工学院学报》2007年第2期257-261,共5页Journal of Guilin University of Technology

基　　金：武汉理工大学材料复合新技术国家重点实验室开放基金资助项目(2004-2005)

摘　　要：以纯铟、SnCl4·5H2O为原料，采用络盐法制备了一次晶粒平均尺寸小于15nm、费氏粒度为148．5nm、粒径分布较窄、在800～3600cm^-1间对红外光的吸收或反射率在90％以上的纳米晶铟锡氧化物（ITO）粉末．通过制备络合盐晶体（NH4）2InCl5·H2O和（NH4）2SnCl6，证实反应初始溶液中有络离子存在．研究了络离子本身以及分散剂聚乙烯吡咯烷酮对ITO粒径的影响．用XRD、红外光谱仪和激光粒度仪对ITO粉末进行了表征．结果表明：络离子浓度的增加有利于ITO粉末粒径的变小，分散剂的加入有利于ITO费氏粒度的减小．Nanocrystalline Indium tin oxide （ITO） the particle average size 148.5 nm and the absorp , the average size of primary crystal particle less than 15 nm, tivity or reflectivity for infrared ray higher than 90% at 800 cm^-1 to 3 600 cm^-1 ,is prepared by complex salt method,with pure metal indium and SnCl4·5H2O as raw materials. Since complex salt crystals, （NH4）2INCl5· H2O and （NH4 ）2SnC16 are synthesized in the experiment,it proves the formation of complex ion in the reaction solution. The influence of complex ion on the particle size of ITO powder is tested by increasing the total concentration ratio of chlorine ion and indium ion n （ Cl ） ： n （In）. The influence of the dispersant （PVP） on the particle size of ITO is studied. ITO nanopowders is characterized by XRD, FT - IR and laser particle size analyzer. Result indicates that the ITO average size of primary crystal particle decreases with the concentration of complex ion increase and the existing of dispersant （PVP） decreases the particle average size of ITO.

关 键 词：铟锡氧化物(ITO) 纳米晶 络盐法 分散剂 络离子 

分 类 号：TB383[一般工业技术—材料科学与工程]