IR, DTA, TG, XRD, TEM, BET and XPS indicated that the photocatalytic activity of TiO2 was related with crystal type, crystal degree, particle size, surface area and superficial hydroxyl.

• IR、DTA.；TG、XRD、TEM、BET、XPS等分析表明TiO2的光催化活性必须用其晶型、结晶度、粒径大小、比表面积、表面羟基等综合起来评价