Visible light driven CuBi2O4 heterostructures and their enhanced photocatalytic activity for pollutant degradation: A review

The existence of organic, inorganic, and microbiological contaminants in water bodies continues to pose a serious threat to public health worldwide. The photocatalytic elimination of these contaminants using copper bismuthate (CuBi2O4) heterostructures has been the subject of numerous studies. CuBi2O4 heterostructures have demonstrated their effectiveness as a photocatalyst because of their longer charge carrier lifespan, enhanced capacity to absorb solar light, and greater charge carrier separation. The various techniques for fabricating CuBi2O4 heterostructures such as hydrothermal, sol-gel, solid state, solvothermal, electrospinning, spray pyrolysis, and electrodeposition are extensively discussed in this review paper. A wide range of CuBi2O4 heterostructures and their different mechanisms of action are also covered. The photocatalytic degradation of pollutants by copper bismuthate (CuBi2O4) heterostructures is also presented in detail. Furthermore, a thorough critical discussion is included about the prospects and difficulties of using CuBi2O4 heterostructures for the photocatalytic purification of wastewater.