▎ 摘　　要

NOVELTY - Photocatalytic decomposition of dye in dye-containing wastewater involves adding bismuth nanocluster-bismuth nanoparticles/titanium dioxide/graphene composite photocatalyst to dye-containing wastewater and then stirring, adjusting pH value to 3-4.5 and then placing in a glass bottle, reacting the mixture for 0.2-1 hour and then stirring at room temperature and carrying out photocatalytic degradation reaction for 0.5-2.5 hours. USE - The process is useful for photocatalytic decomposition of dye in dye-containing wastewater. ADVANTAGE - The process enables photocatalytic decomposition of dye in dye-containing wastewater with high efficiency and excellent degradability and photocatalytic activity.