纳米二氧化钛导电粉制备研究

Synthesis of Nanoscale Titanium Dioxide Conductive Powder

采用化学共沉淀方法，以掺杂sb的SnO2（ATO）包覆纳米二氧化钛，制备纳米二氧化钛导电粉．研究制备备件对纳米二氧化钛体积电阻率的影响，利用SEM、XRD和XRF分析产物的表面形貌、成分与含量．实验得出较佳的制备条件为：反应温度70～80℃，SnCl4·5H2O的质量分数为60％，SbCl3的质量分数为6％，pH值为2，加料时间2．5h，煅烧时间2h，煅烧温度600℃．

Nanoscale titanium dioxide conductive powder was prepared by a chemical co-precipitation method, in which TiO2 particles were coated by antimony doped tin dioxide. The effect of preparation con- ditions on the electrical resistivity of production was investigated. Scanning electron microscope （SEM）, X-ray diffraction （XRD） and X-ray fluorescence spectroscopy （XRF） techniques were performed to characterize the pattern, composition and content of the production. The results showed that the better preparation conditions were reaction temperature 70 - 80 ℃, the amount of tin tetrachloride hydrated 60 %, the amount of antimony oxide doped 6 %, pH value 2, charging-up time 2 h, calcinations time 2 h and calcinations temperature 600 ℃.