Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity

The design and construction of heterojunction photocatalysts, which possess a staggered energy band structure appropriate interfacial contact, is an effective way to achieve outstanding photocatalytic performance. In this study, 2D/2D BiOBr/g-C3N4 heterojunctions were successfully obtained by convenient in situ self-assembly route. Under simulated sunlight irradiation, 99% RhB (10 mg·L−1, 100 mL) was efficiently degraded 1.5-BiOBr/g-C3N4 within 30 min, better than the performance both BiOBr g-C3N4, it has superior stability. addition, composite also exhibits enhanced activity for H2 production. can be attributed intimate interface larger surface area, highly efficient separation photoinduced electron–hole pairs. Based on experimental results, novel S-scheme model proposed illuminate transfer process charge carriers. This study presents simple develop step-scheme photocatalysts environmental related applications.