Ag Nanoparticle enhanced Photocatalytic Activity of Rutile TiO₂ Films prepared by Electrostatic Self-assembly Method

【作者】 潘锋；

【Author】 Feng Pan, Junying Zhang*, Haiying Liu, Tianmin Wang and Weichang Hao Center of Materials Physics & Chemistry, Beijing University of Aeronautics and Astronautics, Beijing 10083, P. R. China

【机构】 北京航空航天大学理学院凝聚态与材料物理研究中心；

【Abstract】 Ag nano-particles were deposited on the surface of TiO2 self-assembled films by photo-reduction of Ag+ solution. SPM, XPS and UV-Vis spectrophotometer were employed to characterize the microstructure and photo-catalytic performance of the films. An obvious enhancement of photo-catalytic activity had been observed. Since rutile had a lower optical band gap than anatase, a higher photo-catalytic efficiency improvement of rutile than that of anatase was obtained under the help of Ag nano-particles, which acted as electron acceptors.更多还原