Effect of substrate temperature on structural properties and photocatalytic activity of TiO2 thin films
来源期刊：中国有色金属学报(英文版)2007年第4期
论文作者：赵磊 连建设
文章页码：772 - 772
Key words：TiO2 thin film; pulsed laser deposition; photocatalytic activity; orientation
Abstract: Titanium dioxide (TiO2) films with anatase structure were prepared on quartz glass substrates by pulse laser ablating titanium (99.99%) target under oxygen pressure of 10 Pa at substrate temperature of 500-800 ℃. The structural properties of the films were characterized by X-ray diffractometry(XRD), X-ray photoelectron spectroscopy(XPS) and field emission scan electron microscopy(FESEM). The results show that, as the substrate temperature is increased from 600 ℃ to 800 ℃, the anatase structure of the films changes from random growth to (211)-oriented growth. The absorption edge tested by UV-Vis Spectrometer has a blue shift. The photocatalytic activity of the films was tested on the degradation of methyl orange. It is found that the film with random growth structure exhibits better photo-degradation efficiency than that with (211)-oriented growth structure.
基金信息：the National Basic Research Program of China
