从含聚乙二醇的钛醇盐溶胶前驱体出发,通过浸渍提拉法在玻璃表面制备了锐钛矿型多孔TiO2薄膜.随着前驱物中聚乙二醇加入量及分子量的增加,聚乙二醇热分解后在薄膜中产生气孔的数量增多,孔径增大,TiO2薄膜表面的羟基含量也增加.TiO2薄膜中引入适当大小的微孔可明显提高薄膜的光催化活性; 当孔径接近400 nm时,光的散射增强,透光率下降,薄膜的光催化活性降低.
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