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锐钛矿型ＴｉＯ２ 多孔纳米薄膜可以从含聚乙二醇的钛醇盐溶胶前驱体中通过溶胶—凝胶法制备。涂层的形貌，如孔的大小和孔的分布可以通过聚乙二醇的加入量来控制。当聚乙二醇的加入量为０～２．０ｇ 时，孔径大小在０～４００ｎｍ 范围内变化。可见光透过光谱分析表明：随着ＴｉＯ２ 薄膜中气孔孔径增大，光的散射增强，透过率减小，该ＴｉＯ２ 镀膜玻璃对于紫外线具有吸收作用。有机磷农药敌敌畏水溶液在紫外灯照射和ＴｉＯ２ 多孔纳米薄膜的共同作用下被完全降解为无机物。光催化降解实验表明：在ＴｉＯ２ 薄膜中引入气孔增强了光催化活性，孔的大小和薄膜厚度对光解率有显著的影响。当孔径大小为５０～２００ｎｍ ，镀膜次数为１０～１５ 次时，ＴｉＯ２薄膜显示出好的光催化效率
Anatase TiO2 porous nanofilms can be prepared by sol-gel method from polyethylene glycol-containing titanium alkoxide sol precursors. Coating morphology, such as pore size and pore distribution can be controlled by the amount of polyethylene glycol added. When the amount of polyethylene glycol is 0 ~ 2.0g, the size of the pores varies from 0 to 400nm. Visible light transmission spectrum analysis shows that as the pore diameter of TiO2 film increases, the light scattering increases and the transmittance decreases. The TiO2 coated glass absorbs ultraviolet light. The organophosphorus pesticide Dichlorvos solution is completely degraded to inorganic matter under the action of UV lamp and TiO2 porous nano-film. Photocatalytic degradation experiments show that: the introduction of pores in the TiO2 film to enhance the photocatalytic activity, pore size and film thickness have a significant effect on the photolysis rate. When the pore size of 50 ~ 200nm, the number of coating 10 ~ 15 times, the TiO2 film shows good photocatalytic efficiency