Nanosized titania(TiO2) with particle size less than 10 nm has been prepared by low _ temperature thermolysis. The photocatalytic degradation of o _ nitrophenol and 2,4 _ dinitrophenol with prepared TiO2 was studied using UV light source at 254 nm.

• 以主波长254nm的紫外灯作为光源 ,研究了锐钛型纳米TiO2 对邻硝基苯酚、2,4_二硝基苯酚的光催化降解行为 ,并与普通TiO2 作了对比;