SiC_xO_y/SnO_2:F/TiO_2复合薄膜的制备及其性能

A Triple-layer Glass-coating for Low Emissivity and Photocatalytic Activity

本文制备了具有低反射率特性和光催化性能的三层复合薄膜SiCxOy/SnO2:F/TiO2。SiCxOy层直接沉积在玻璃基体上,作为障碍层避免离子从玻璃基板扩散到最外的功能层。而SnO2:F和TiO2作为功能层则分别使复合薄膜具有低反射率和光催化性能。利用X射线衍射(XRD)、扫描电子显微镜(SEM)和傅立叶变换红外光谱仪(FTIR)对样品进行表征。与纯TiO2薄膜相比,复合薄膜由于表面粗糙,以及TiO2到SnO2层界面间的电子移动,表现出较高的光催化性能和亲水性。另一方面,由于SnO2:F层的低E特性,复合薄膜的远红外反射率随着TiO2薄膜厚度逐渐增加而减少。

A triple-layer composite film of SiCxOy/SnO2：F/TiO2, which combines low-emissivity （low-e） property and photocatalytic activity for the glass-coating, was fabricated. The layer of SiCxOy is deposited directly on glass substrate, acting as the barrier layer to prevent the ions diffusion from glass substrates to outside layers. The functional layers of SnO2 ： F and TiO2 devote to low-e and photocatalytic activity properties for the composite film, respectively. Measurements were performed by X-ray Diffraction （XRD）, Scanning Electron Microscopy （SEM） and Fourier Transform Infrared （FTIR） spectrophotometer. Compared to the pure TiO2 film, the composite film shows higher photocatalytic and hydrophilic activities, which might be due to the rugged surface and the interracial electron transfer from TiO2 layer to SnO2 layer. On the other hand, the reflectance of composite films in far-range infrared region, which is due to the low-E property of SnO2 ： F layer, decreases with the increasing of TiO2 film thickness.