Preparation and photocatalytic activity of visible light-sensitive selenium-doped bismuth sulfide

►Se-doped Bi2S3 is a narrow band gap semiconductor and can respond to visible light. ►The photocatalytic activity of Se-doped Bi2S3 is higher than that of Bi2S3 nanoparticles. ►The new Se-doped Bi2S3 photocatalysts will have great significance for the design of visible-light-induced photocatalysts.