Efficacy of BPNS/TiO2 in catalyzing the visible-light-driven degradation of BPA

A novel composite material consisting of black phosphorus nanosheets (BPNS) and titanium dioxide (TiO2) for degrading bisphenol A (BPA) under visible light was investigated. Through a series of photocatalytic experiments and characterization techniques, we found that BPNS/TiO2 composite materials exhibit excellent BPA degradation ability under visible light irradiation, are capable of degrading 85 % of BPA, and can degrade up to 88.72 % of BPA in acidic environments. The synergistic effect of the composite, combined with the advantages of BPNS, increases the light absorption capacity of TiO2. The introduction of TiO2 can reduce the photogenerated electron-hole pair recombination ability of the composite material and improve the carrier migration ability of the composite material, making it an efficient and environmentally friendly catalyst for BPA degradation. We identified and characterized intermediate products of BPA degradation using high-performance liquid chromatography–mass spectrometry (HPLC–MS) and other study. This process elucidates the potential degradation pathways. The results of this study provide strong support for addressing BPA pollution in the environment and offer a new scientific foundation for the application of photocatalysis technology in environmental protection and wastewater treatment.