以工业钛液为原料,在常温常压下制备了锐钛矿型纳米二氧化钛粉体。用X射线衍射、高分辨率电镜、激光散射粒径分析、BET(Brunauer-Emmett-Teller)比表面积分析、X射线光电子能谱(X-ray photoelectron spectroscopy,XPS)和扫描电镜等对粉体进行了表征,研究了硝酸浓度和反应时间对粒径大小的影响。结果表明:制备的纳米二氧化钛呈球形,平均粒径小于10nm,粒径分布窄,结晶良好,BET比表面积为139.57m2/g。样品中的聚集体为近似球形,其尺寸为35nm。XPS分析表明:在纳米二氧化钛颗粒表面不仅包括钛、氧和碳元素,还包括氮、铁和硫元素。 An industrial titanium dioxide as raw material, prepared at room temperature and pressure anatase titanium dioxide nano powder. The powders were characterized by X-ray diffraction, high resolution electron microscopy, laser scattering particle size analysis, BET (BET), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy Characterization was performed to investigate the effect of nitric acid concentration and reaction time on particle size. The results show that the prepared nano-titanium dioxide is spherical, the average particle size is less than 10nm, the particle size distribution is narrow, the crystal is good and the BET specific surface area is 139.57m2 / g. The aggregates in the sample were approximately spherical with a size of 35 nm. XPS analysis showed that the surface of the nano titanium dioxide particles not only includes titanium, oxygen and carbon elements, but also nitrogen, iron and sulfur elements.