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:从含聚乙二醇 (PEG)的钛醇盐溶胶前驱体中通过溶胶 -凝胶工艺在普通钠钙玻璃表面制备了多孔锐钛矿型TiO2 纳米薄膜 .用扫描电镜 (SEM )、X射线光电子能谱 (XPS)和红外光谱 (IR)分析了TiO2 薄膜表面的微结构 ,结果表明 :随着前驱物中聚乙二醇的加入量和分子量的增加 ,聚乙二醇热分解后的薄膜中产生的气孔就越多且孔径越大 ,同时TiO2 薄膜表面的羟基含量增加且表面粗糙度增大 .接触角测试表明 :随着薄膜中气孔数量的增多和孔径增大 ,薄膜表面的亲水性增强 ,水与薄膜表面的接触角下降为 0° .分析了多孔TiO2 薄膜表面的超亲水机理 .
: A porous anatase TiO2 nanoparticle was prepared on a common soda-lime glass by a sol-gel process from a poly (ethylene glycol) -containing titanium alkoxide sol precursor. The morphology of the porous anatase TiO2 nanofilms was characterized by scanning electron microscopy (SEM), X-ray The microstructure of TiO2 film was analyzed by X-ray photoelectron spectroscopy (XPS) and infrared spectroscopy (IR). The results showed that with the addition of polyethylene glycol and the increase of molecular weight, the thermal decomposition of polyethylene glycol film The larger the pores are and the larger the pore diameter is and the more the hydroxyl content on the surface of the TiO2 film is increased and the surface roughness is increased.The contact angle test shows that with the increase of the number of pores in the film and the increase of the pore diameter, The contact angle between water and film surface drops to 0 ° .The superhydrophilic mechanism of the surface of porous TiO2 film has been analyzed.