喷雾热解法制备ITO粉体的研究

The study on the preparation of ITO powder by spray pyrolysis

以InCl_3·4H_2O和SnCl_2·2H_2O为原料、水为溶剂溶解作为前驱体溶液,采用微波管式炉加热联合超声波喷雾热解法制备得到ITO粉体。实验研究了不同微波热解温度和添加无水乙醇对ITO产品的微观形貌的影响,利用TG-DSC、XRD、SEM、EDS、TEM对样品的结构特征和微观形貌进行了表征分析。研究结果表明,合适的前驱液浓度、适宜的温度和适当的添加剂是影响氧化铟锡(ITO)粉体形貌的关键因素。得到粒径较小、分散性好和形貌呈球形的超细粉体的最佳条件为温度650℃,浓度0.01 mol/L,酒精加入量为30%,滤网加入200目。

This experiment was conducted with the raw materials of InCl_3·4H_2O and SnCl_2·2H_2O,the solvent of water and the mixture of them as precursor solution.And the ITO powders were prepared with the joint method of micro-wave and ultrasonic wave spray pyrolysis in a tubular furnace heated by micro-wave.The influence of different micro-wave pyrolysis temperature and adding the surface active agent of ethanol on the change of microstructure has been analyzed.And the structural characteristics and microstructure of the product have been characterized with the help of TG-DSC,EDS,XRD,SEM and TEM.The results demonstrated that appropriate precursor solution concentration,temperature and proper quantity of additive are the key factors that have effect on the morphology of ITO powders.The extraordinarily fine ITO particles which have relatively small diameter,good dispersibility property and spherical shape morphology were prepared when the temperature was 650 ℃,concentration was 0.01 mol/L,the quantity of alcohol added was 30% and the a 200 mesh strainer was inserted.