摘要
以SnCl4·5H2O和SbCl3为原料,采用水热法制备出了纳米级锑掺杂二氧化锡(ATO)导电微粉,运用XRD和TEM等测试手段对粉体进行了表征,比较系统地研究了掺杂量,共沉淀温度,溶液pH值,水热时间、温度和表面活性剂对粉体粒度、形貌和电性能的影响规律。研究表明,合成的ATO粉体分散性较好、导电性能优异,粒径在10nm左右,具有金红石型结构。在ATO纳米导电粉的制备过程中,前驱体制备温度对其性能有很大影响,当共沉淀温度在40-50℃时制得的粉体导电性能最佳。水热条件对粉体的形貌、粒度和导电性也有较大的影响,在200℃,4h,pH=2～4条件下可以制得导电性能良好的ATO粉体,所添加的表面活性剂可以改善粉体的粒径和分散性能,但对粉体的导电性影响极小。掺入Sb3+的量对载流子的迁移率有很大的影响,在掺杂浓度为4～5%左右可制得导电性极佳的纳米ATO粉体。
Antimony doped tin dioxide nanometer powders（ATO） have been prepared by the hydrothermal method using SbCl3 and SnCl4·5H2O as the raw materials, ammonia aqueous is added into the mixed solution to get hydroxid depositions . The precipitate is dumped into autoclave to react . The productions are examined by X-ray diffraction（XRD）, transmission electron microscopy（ TEM ） techniques to investigate their crystal phase composition , particle size and crystal appearance characteristics. The resistivity of the powders are determined on an house-made equipment . The results show that the ATO powder prepared at 200℃for 4h with pH value of 2 - 4 and Sb2O3/SnO2 ration of 5：95 are well crystallized, meanwhile the powder exhibits good electrical property, and its dispersity can be improved by surfactants。
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2005年第4期565-569,共5页
Journal of Materials Science and Engineering
基金
广西省经委资助项目
关键词
ATO
水热法
纳米粉
表面活性剂
电性能
ATO
hydrothermal method
nanometer powders
surfactant
electrical property
