Photoelectrocatalytic removal of dye and Cr(VI) pollutants with Ag2S and Bi2S3 co-sensitized TiO2 nanotube arrays under solar irradiation

Ag2S and Bi2S3 nanoparticles co-sensitization on self-organized TiO2 nanotube arrays were prepared by successive ionic layer absorption and reaction process, and TiO2 NTs/Ag2S-Bi2S3 largely enhanced the photocurrent and photoelectrocatalytic removal of MO, RhB and Cr(VI) under solar light irradiation.151