采用RF-PCVD法,以TiCl4+O2为反应体系,制备出纳米级的TiO2粉体.经TEM,XRD及粒度分布仪测试表明:粉体呈近球形,为锐钛矿型和金红石型的混晶体,粒径范围为15 nm-45 nm,团聚后,粒径≤116 nm的粉体占90%,并对纳米粉体的形成、分布和晶型进行了初步探讨.苯酚降解实验表明,TiO2粉体具有明显的光催化活性.
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