Ag Nanoparticle Enhanced Photocatalytic Activity of Rutile TiO2 Films Prepared by Electrostatic Self-Assembly Method
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.
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
F. Pan et al., "Ag Nanoparticle Enhanced Photocatalytic Activity of Rutile TiO2 Films Prepared by Electrostatic Self-Assembly Method", Key Engineering Materials, Vols. 280-283, pp. 293-296, 2005