Photocatalytic performance of TiO2 nanotube structure based on TiN coating doped with Ag and Cu

Abstract In this paper, TiN, TiN-Ag and TiN-Cu coatings were prepared by multi-arc ion plating. TiO2 nanotube arrays were constructed on the coatings by anodization reaction at room temperature. Building TiO2 nanotube arrays on the coating can retain the performance of the hard coating itself and reduce the process of destroying the structure of the TiO2 nanotubes. Non-metallic N doping and co-doping of metallic Ag, Cu and non-metallic N make the nanotubes catalyzed by visible light. The specific surface area of TiO2 by changed the anodizing voltage. The results show that the anodic oxidation voltage is 15V and Cu, N co-doped TiO2 photocatalytic degradation performance is the best.