Photocatalytic performance and mechanism of BP/Bi2MoO6 powder material with direct Z-type hetero-junction

The photocatalyst of BP/Bi2MoO6 was prepared by the coprecipitation method to form a direct Z-type hetero-junction. The prepared samples were characterized and analyzed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM) and UV–Vis diffuse reflectance spectroscopy (DRS).The photocatalystic activity efficiency of the BP/Bi2MoO6 composite materials was investigated by photocatalytic degradation of rhodamine B (RhB) under visible sunlight. The experimental results showed that the catalyst photocatalytic activity was optimal. When the doping content of BP was 1%, the photocatalytic activity of this catalyst was optimal and the degradation efficiency of RhB reached about 91% within 120 min, which was about 78% higher than that of pure Bi2MoO6. Electrons play a leading role in the entire photodegradation reaction system, with a contribution of about 80.8%.