Nano TiO_2 thin film prepared by sol gel method with nitric acid as inhibitors

TiO2 thin films were prepared through sol gel method with Ti(OC4H9)4 as main raw material,nitric acid as inhibitor,glass slides as base at room temperature.The influences of the usage of different additives,water and absolute alcohol on preparation of TiO2 thin films were discussed.The best film formula of nano TiO2 preparation was obtained.TiO2 thin films were characterized by XRD,SEM and DSC techniques,and the photocatalytic properties of TiO2 thin films to methyl orange was determined.The results of experiment show that TiO2 crystal is anatase type,its size is 9 nm,and TiO2 thin films possess high catalytic activity.