Constructing Cd0.5Zn0.5S/Bi2WO6 S-scheme heterojunction for boosted photocatalytic antibiotic oxidation and Cr(VI) reduction

The development of distinguished photocatalysts with high photo-carrier disassociation and photo-redox power for efficient elimination of pollutants in water is of great significance but still a grand challenge. Herein, a novel Cd0.5Zn0.5S/Bi2WO6 S-scheme heterojunction was built up by integrating Cd0.5Zn0.5S nanoparticles on Bi2WO6 microspheres via a simple route. The S-scheme charge transfer mode substantially boosts the high-energetic electrons/holes spatial detachment and conservation on the Cd0.5Zn0.5S (reduction) and Bi2WO6 (oxidation), respectively, as well as effectively suppresses the photo-corrosion of Cd0.5Zn0.5S, rendering Cd0.5Zn0.5S/Bi2WO6 photocatalysts with superior redox ability. The optimal…