Abstract
The photocatalytic CO(2) reduction strategy driven by visible light is a practical way to solve the energy crisis. However, limited by the fast recombination of photogenerated electrons and holes in photocatalysts, photocatalytic efficiency is still low. Herein, a WO(3)/BiOBr S-scheme heterojunction was formed by combining WO(3) with BiOBr, which facilitated the transfer and separation of photoinduced electrons and holes and enhanced the photocatalytic CO(2) reaction. The optimized WO(3)/BiOBr heterostructures exhibited best activity for photocatalytic CO(2) reduction without any sacrificial reagents, and the CO yield reached 17.14 μmol g(-1) after reaction for 4 h, which was 1.56 times greater than that of BiOBr. The photocatalytic stability of WO(3)/BiOBr was also improved.