Abstract:Visible-light photocatalytic materials have high performance in the degradation of organic pollutants, but most semiconductors have low quantum efficiency and poor photocatalytic activity. A new heterostructure bismuth vanadium oxide / bismuth oxide visible light photocatalyst was prepared and its properties were tested. Bismuth oxide and bismuth vanadate were prepared on this basis, and bismuth bismuth vanadate composite photocatalyst was prepared. The photocatalytic performance of the bismuth vanadium bismuth oxide photocatalyst degradation of Luo Danming B solution was measured by analyzing the characterization and analysis method of the prepared materials. XDR analysis, SEM analysis, UV visible diffuse reflectance absorption spectrum analysis and fluorescence spectrum analysis were used to detect the degradation performance and stability of visible photocatalytic materials. The results showed that when the ratio of vanadium and oxygen was 1.3, the performance of the sample reached the peak. When the vanadium oxygen ratio continued to rise to 1.4, the performance decreased. Therefore, when the vanadium and oxygen ratio was best, the degradation rate was up to 92%, which could greatly reduce the concentration of rhodamine B solution and have a high degradation rate. XRD analysis showed that no new diffraction peak appeared after irradiation. It shows that the prepared sample has strong degradation performance and high stability.