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以钛酸丁脂(Ti(C4H9O)4)为前驱体,采用自制的火焰喷雾热分解装置在玻璃衬底上制备了TiO2自清洁薄膜。应用扫描电子显微镜(SEM)、X射线衍射(XRD)、紫外-可见透射光谱(UV-Vis)分析了薄膜的形貌、结构和透光性,并对薄膜的光催化性能和亲水性能进行了测试。结果表明,火焰喷雾热分解法制备薄膜要求雾滴先成液膜,再热分解为固体薄膜;采用火焰喷雾热分解法在玻璃衬底上成功制备的TiO2薄膜为锐钛矿晶型;探讨了沉积时间和退火温度对薄膜的结晶和自清洁性及光催化性能的影响,沉积时间长,退火温度高的薄膜的结晶度越高,光催化性能和亲水性越好;用该方法制备的温度约为400℃,退火温度为600℃薄膜,光透过率可超过70%。
Titanium dioxide (Ti (C4H9O) 4) precursor was prepared on a glass substrate by self-made flame spray pyrolysis apparatus. The morphology, structure and optical transparency of the films were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-Vis. The photocatalytic and hydrophilic properties of the films were also studied. The test. The results show that the flame spray pyrolysis method to prepare the film requires that the droplets first form a liquid film and then be thermally decomposed into a solid thin film. The TiO2 film prepared on the glass substrate by the flame spray pyrolysis method is anatase crystal type. Deposition time and annealing temperature on the crystallization and self-cleaning film and photocatalytic properties of the film, the deposition time is long, the higher the annealing temperature of the higher the crystallinity of the film, the better the photocatalytic properties and hydrophilicity; prepared by this method The temperature is about 400 ℃, the annealing temperature is 600 ℃ film, the light transmittance can exceed 70%.