标题：Fabrication of AgAu alloy-TiO2core-shell nanoparticles and their photocatalytic properties
作者：Zhang, Xiao-yu ;Yuan, Shu-long ;Yuan, Yu-zhen ;Li, Xue
作者机构：[Zhang, Xiao-yu ;Yuan, Yu-zhen ] College of Materials Science and Engineering, Shandong University of Technology, Zibo; 255000, China;[Yuan, Shu-long 更多
摘要：In this paper, for improving the photocatalytic efficiency of titania (TiO2) nanoparticles (NPs), AgAu alloy-TiO2core-shell NPs are fabricated via a sol-gel (SG) process in the presence of AgAu alloy NPs with block copolymer shells as templates. The photocatalytic activities of the AgAu-TiO2NPs on the photodecomposition of methylene blue (MB) are investigated. The AgAu-TiO2composite NPs coated with 5.0% titania related to block copolymers show higher photocatalytic activity than the other samples in which the titania contents are larger than 5.0%. The results indicate that the increase of the thickness of the TiO2shell leads to the decrease of the photocatalytic activity.
© 2015, Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.