用硫酸钛与草酸按比例配合 ,析出草酸氧钛酸晶体 ,将其洗涤后在 75 0～ 82 0℃焙烧 ,因草酸氧钛酸分解时 ,其分子中较大部分成分以气体 :CO2 、CO、水蒸气形式挥发到空气中 ,从而固态产物成为纳米级的金红石型二氧化钛粉体。用透射电子显微镜 (TEM)测定 ,其粒径范围为 10～ 35 nm;用 X射线衍射 (XRD)测定 ,其晶型为金红石型。 Titanium oxalate titanate crystals were precipitated by the proportional mixing of titanium sulfate and oxalic acid. After washing, the crystals were calcined at 75 0 ~ 82 0 ° C. When the oxotitanic acid was decomposed, most of the components in the molecule were gasified with CO2, CO , The form of water vapor volatilization to the air, so that the solid product to become nanoscale rutile titanium dioxide powder. Its particle size ranged from 10 to 35 nm as measured by transmission electron microscopy (TEM); its crystal form was rutile by X-ray diffraction (XRD).