Preparation and Photocatalytic Property of WO3-TiO2/Ti Ceramic Film via Anodic Oxidation Treatment

摘要：

　　The high efficient WO3-TiO2/Ti ceramic film was prepared on the surface of titanium by the approach of anodic oxidation in order to make the absorbable spectrum of catalyst spread to the visible region and restrain the high recombination rate of electron-hole pairs during photoreaction.The surface morphology and the distribution of elements were studied with scanning electron microscopy and energy dispersive spectroscopy.The phase composition of the films was investigated with XRD.The results showed that the main components in the coating were WO3,rutile TiO2 and anatase TiO2.The compound WO3-TiO2/Ti ceramic film enlarged the range of the reacting visible light and increased the absorbing intensity.The rhodamine B was successfully photodegraded under visible light irradiation by WO3-TiO2/Ti catalyst films.It was found that the highest degradation rate ofrhodamine B was achieved through an optimal W dosage of 4.2 %(wt %) in WO3-TiO2/Ti ceramic film.It was also confirmed that the recombination rate of electron-h3le pairs in WO3-TiO2/Ti ceramic film declined due t3 the existence of WO3 in TiO2/Ti ceramic film.

关键词： WO3-TiO2/Ti ceramic film Anodic oxidation Photodegradation Rhodamine B

作者: Yanli Jiang Huiling Liu Zhaohua Jiang Zhongping Yao

作者单位: Dept.of Environmental Engineering,Harbin Institute of Technology,Harbin 150090,P.R.China;Dept.of App Dept.of Environmental Engineering,Harbin Institute of Technology,Harbin 150090,P.R.China Dept.of Applied Chemistry;Harbin Institute of Technology,Harbin 150090,P.R.China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1500-1502

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）