▎ 摘　　要

RGO/Ag/TiO2-nanotubes/Ti plates with high photocatalytic activity were fabricated via electrochemical reduction of graphene oxide on Ag/TiO2-nanotubes. The loading of silver nanoparticles was carried out by electroless reduction of Ag1+ onto TiO2 nanotubes previously formed by anodizing titanium. Microstructure studies show that reduced graphene oxide (RGO) layers having high surface area have been deposited on the as-prepared Ag/TiO2-nanotubes, where nanoparticles of Ag had grown on the walls of TiO2-nanotubes. The results of photocatalytic experiments demonstrate that the RGO/Ag/TiO2-nanotubes/Ti plate exhibits significantly enhanced photocatalytic activity for the photocatalytic degradation of Methylene Blue (MB) dye compared with TiO2-nanotubes plate under UV light irradiation. The enhanced photocatalytic activity of the RGO/Ag/TiO2-nanotubes/Ti plates tan be attributed to the synergistic effects between RGO and Ag/TiO2-nanotubes, which can readily reduce the recombination probability of photogenerated electron/hole pairs and enhance the charge separation efficiency, leading to the higher photocatalytic performance and effectively inhibited photo-corrosion. (C) 2016 Elsevier B.V. All rights reserved.