In this paper, Ag3PO4 nanoparticles were prepared on the surface of TiO2 nanotube arrays (TiO2 NTs/Ag3PO4) by a simple successive ionic layer adsorption and reaction (SILAR) method, and the morphology and optical property were investigated by Scanning electron microscope (SEM) and UV-vis diffusion reflectance spectroscopy (DRS). The deposition of Ag3PO4 nanoparticles could exceedingly extend the absorption of TiO2 nanotubes to the visible light region, which was the prerequisite of TiO2 NTs-Ag3PO4 using in solar cells and photocatalysts. Therefore, TiO2 NTs/Ag3PO4 photoelectrodes significantly improved visible light photocurrent densities compared with pure TiO2 nanotubes. Moreover, TiO2 NTs/Ag3PO4 photocatalysts also achieved high photoelectrocatalytic efficiencies in the removal of organic dyes and Cr(VI) ions. The nontoxic and environmental Ag-based sensitizer would further explore the applications of TiO2 nanotubes into fields of food, drinking water, medicine and so on. (C) 2017 Elsevier B.V. All rights reserved.