【摘要】 以钛酸丁酯为前驱液,无水乙醇为溶剂,乙酰丙酮为稳定剂,制备了TiO2溶胶,采用液位沉降法在清洁的玻璃衬底上镀制TiO2薄膜。研究了添加剂聚乙二醇(1000)、pH、衬底温度对TiO2溶胶在玻璃基板上附着性的影响;研究了液位沉降速度、容器倾角以及溶胶附着性对TiO2薄膜厚度的影响。考察了TiO2薄膜的表面形貌、晶相、光催化性能。结果表明,采用PEG与Ti 4+的质量比为1,不调节pH的TiO2溶胶,在沉降速度为7cm/min,容器倾角为30°所制得的TiO2薄膜的光催化性能最好,光照3h时其光催化降解率高达52.1%。更多还原

【Abstract】 TiO2sol was prepared with butyl titanate as precursor solution,anhydrous ethanol as solvent,acetylacetone as the stabilizer.TiO2 thin film was coated on a clean glass substrate by level sedimentation method.The effect of Polyethylene glycol(1 000)as the additives,pH and the substrate temperature on the adhesion between TiO2 sol and the glass substrate was studied.The influence of level sedimentation velocity,container angle and the adhesion on TiO2 thin film thickness was also studied.The surface morphology,crystal phase,and the photocatalytic performance of TiO2 thin films were researched too.The results showed that when the PEG with Ti 4+mass ratio was 1,the pH value was not adjusted,the settling velocity was 7cm/min,the container angle was 30°,the photocatalytic properties of TiO2 thin film was the best,which was as high as 52.1%after being lighted for 3hours.更多还原