Electrospinning visible light response Bi2MoO6/Ag3PO4 composite photocatalytic nanofibers with enhanced photocatalytic and antibacterial activity

• The effective photocatalytic composite Bi 2 MoO 6 /Ag 3 PO 4 @Silk fibroin was constructed. • The composite material promoted the photocatalytic activity for ciprofloxacin pollutant degradation. • Bi 2 MoO 6 /Ag 3 PO 4 @Silk fibroin composite exhibited excellent antibacterial property toward S. aureus and E. coli. • Bi 2 MoO 6 /Ag 3 PO 4 @Silk fibroin had an excellent balance between antibacterial activity and biocompatibility. Due to its significant biocompatibility and environmental friendliness, the composite of heterojunction photocatalyst and natural protein is a promising material in the field of photocatalysis. For the first time, direct Z-scheme Bi 2 MoO 6 /Ag 3 PO 4 composites with different concentrations of Ag 3 PO 4 were successfully fabricated by an in-situ deposition method, and Bi 2 MoO 6 /Ag 3 PO 4 @silk fibroin (BMO/APO@SF) films were further constructed by electrospinning technology to explore the photocatalytic activity of heterojunction photocatalysts. The results of various characterizations confirmed that improved photocatalytic performance, including efficient charge separation, and a widened visible light absorption range, could be attributed to the formation of a heterojunction structure between Bi 2 MoO 6 and Ag 3 PO 4 , which considerably promoted photocatalytic activity for ciprofloxacin (CIP) degradation. According to the analysis of degradation products measured by Q-TOF, possible CIP degradation pathways were proposed. Density functional theory (DFT) calculation and Laplacian bond order (LBO) analysis were consistent with the results of Q-TOF. Through trapping experiments, the significant contribution of O 2 – to BMO/APO@SF was demonstrated. Moreover, the antibacterial rates of Bi 2 MoO 6 /15Ag 3 PO 4 @SF (BMO/15APO@SF) against Escherichia coli and Staphylococcus aureus were greater than 94.36% and 95.72%, respectively, indicating that BMO/15APO@SF had excellent antibacterial performance.