Photoelectrocatalytic degradation of organic contaminants at Bi2O3/TiO2 nanotube array electrode

▶ The Bi2O3 nanoparticles were deposited onto self-organized TiO2 nanotube arrays from amorphous complex via dip-coating method. ▶ TiO2 nanotube coated by Bi2O3 nanoparticles provide a composite vertically oriented nanostructure. ▶ TiO2 nanotube coated by Bi2O3 nanoparticles exhibited high photoelectrocatalytic activities towards the degradation of organic contaminants under UV and visible light irradiation.