By using microwave-assisted co-precipitation in aqueous phase, adding surface activation agent PEG-6000 into the mixture of InCl3 solution and SnCl4 solution, and dropping the ammonia solution with the density (volume...By using microwave-assisted co-precipitation in aqueous phase, adding surface activation agent PEG-6000 into the mixture of InCl3 solution and SnCl4 solution, and dropping the ammonia solution with the density (volume ratio) of 1-0 to 1-4, ITO precursor was prepared at different reaction system temperatures of 35 ℃-85 ℃, then ITO nano-powder was obtained after it was calcinated at 800 ℃ for 1 h. The morphology of ITO nano-powder was characterized by SEM and its electrical conductivity was determined by conductivity meter. The effects of different temperatures and ammonia concentration in microwave-assisted reaction system on its morphology and electric conductivity were discussed. The experimental results indicate that with the dilution of the ammonia solution or the rise of reacting system temperature, the morphology of ITO particles is transformed from spherical to rod-like one with the decline of its electric conductivity. And the electric conductivity of ITO nano-powders with spherical morphology is higher than that of ITO nano-powders with rod-like morphology.展开更多
铟锡氧化物(Indium tin oxide)是一种优良的透明导电氧化物材料。叙述并对比了目前制备ITO粉体的几种方法的优缺点。对其中的化学共沉淀法和化学滴定法,讨论了从铟锡化合物的物理化学性质来选择原料和沉淀剂,分析了制备过程中各种离子...铟锡氧化物(Indium tin oxide)是一种优良的透明导电氧化物材料。叙述并对比了目前制备ITO粉体的几种方法的优缺点。对其中的化学共沉淀法和化学滴定法,讨论了从铟锡化合物的物理化学性质来选择原料和沉淀剂,分析了制备过程中各种离子的浓度、沉淀时的温度、终点pH值、煅烧温度的范围及时间、分散剂等影响因素。展开更多
基金Project (50725416) supported by the National Science Fund for Distinguished Young Scholars of ChinaProject(2008RS4037) supported by the Postdoctoral Science and Research Special Foundation of Hunan Province, ChinaProject supported by the Postdoctoral Science Foundation of Central South University, China
文摘By using microwave-assisted co-precipitation in aqueous phase, adding surface activation agent PEG-6000 into the mixture of InCl3 solution and SnCl4 solution, and dropping the ammonia solution with the density (volume ratio) of 1-0 to 1-4, ITO precursor was prepared at different reaction system temperatures of 35 ℃-85 ℃, then ITO nano-powder was obtained after it was calcinated at 800 ℃ for 1 h. The morphology of ITO nano-powder was characterized by SEM and its electrical conductivity was determined by conductivity meter. The effects of different temperatures and ammonia concentration in microwave-assisted reaction system on its morphology and electric conductivity were discussed. The experimental results indicate that with the dilution of the ammonia solution or the rise of reacting system temperature, the morphology of ITO particles is transformed from spherical to rod-like one with the decline of its electric conductivity. And the electric conductivity of ITO nano-powders with spherical morphology is higher than that of ITO nano-powders with rod-like morphology.
文摘铟锡氧化物(Indium tin oxide)是一种优良的透明导电氧化物材料。叙述并对比了目前制备ITO粉体的几种方法的优缺点。对其中的化学共沉淀法和化学滴定法,讨论了从铟锡化合物的物理化学性质来选择原料和沉淀剂,分析了制备过程中各种离子的浓度、沉淀时的温度、终点pH值、煅烧温度的范围及时间、分散剂等影响因素。
