Effective enhanced photocatalytic H2O2 production through synergistic oxygen vacancy defects and In situ-growth Z-scheme BiOBr/WO3 heterojunction with compact interface

Rational heterojunction interface construction and defect engineering have been regarded as significant strategies to enhance the photocatalytic performance of hydrogen peroxide (H 2 O 2 ) production. Herein, a novel 2D/1D BiOBr/WO 3 Z-scheme heterostructure with compact interface and rich oxygen vacancies (OVs) was successfully fabricated by an in situ -growth procedure. The rational design architecture and electronic structure allow the photocatalytic system to fully optimize light absorption, charge separation, and surface redox reaction . Benefited from synergistic effect of the formation of compact Z-scheme heterostructur and oxygen vacancies , the as-prepared BiOBr/WO 3 photocatalysts exhibit a greatly improved photocatalytic performance in the production of H 2 O 2 with a yield of 82.4 mM/h/g. We believe that this work provides a novel sight to develop high-efficiency photocatalyst via microstructure nanointerface control and defect engineering.