Visible light-driven efficient degradation of Rhodamine B using rGO/Bi2O2CO3/BiOCl composite photocatalysts

In this study, rGO/Bi 2 O 2 CO 3 /BiOCl composite photocatalysts were prepared using a one-step solvothermal method . The formation and morphology of these photocatalysts were characterized through XRD , Raman, XPS , SEM , TEM, and other techniques. The efficiency of the composite photocatalysts was assessed by decreasing RhB under visible light . Among them, the photocatalytic activity of 4 wt% rGO/Bi 2 O 2 CO 3 /BiOCl was discovered to be the best, with a degradation rate as high as 96 % within 60 min. This is because the inclusion of rGO not only increased the specific surface area of the ternary materials, but also acted as a carrier for electrons transfer . Besides, the heterojunction structure constituted between Bi 2 O 2 CO 3 and BiOCl also opens up a new pathway for carrier separation. Finally, we explored the degradation mechanism of rGO/Bi 2 O 2 CO 3 /BiOCl ternary materials in detail. This study holds an important reference for the synthesis of bismuth-based composite photocatalysts and has potential applications in wastewater treatment .