水资源与水工程学报2017，Vol.28Issue(3)：55-60,6.DOI:10.11705/j.issn.1672-643X.2017.03.11
WO3/TiO2光催化剂的制备及光催化产氢性能研究
Preparation and photocatalytic H2-production performanceof WO3/TiO2 photocatalyst
摘要
Abstract
In order to enhance the photocatalytic activity of TiO2 which has a wide band gap width but a narrow range in light responsive region, a series of WO3/TiO2 composite photocatalysts with different composite proportions were prepared by a sol-gel method.The prepared samples were characterized by Scanning Electron Microscopy, N2 physical adsorption, X-ray diffraction, UV-visible spectroscopy and Fourier transform infrared spectroscopy.The effects of different composite proportions on the morphology, crystal structure, specific surface area and photocatalytic activity of WO3/TiO2 were investigated.The photocatalytic activity of the samples was evaluated by photo-catalysis water splitting under 300W Xenon lamp.In addition, the reaction mechanism over the composite catalyst was discussed.The results showed that, when λ was 300 to 600 nm, the absorbance of 2%-WO3/TiO2 was greater than the absorbance of TiO2, the absorption band edge was redshifted.As the composite ratio was 2%, the hydrogen photolysis aquatic activity of WO3/TiO2 was the best, with a highest value of 14445.3 μmol/(h·g), concentration of WO3 showed 10 times photocatalytic activity compared to pure TiO2.The photocatalyst technology would have extensive applications in the field of water splitting by solar light.关键词
TiO2/WO3/半导体复合/光解水制氢Key words
titanium dioxide/tungsten trioxide/semiconductor composite/photocatalysis water splitting分类
化学化工引用本文复制引用
宋佳玲,浦婷婷,薛亚楠,王晨晖,方学友,崔立峰..WO3/TiO2光催化剂的制备及光催化产氢性能研究[J].水资源与水工程学报,2017,28(3):55-60,6.基金项目
国家自然科学基金项目(51528202、51671136) （51528202、51671136）
