“…Bi 2 Fe 4 O 9 (BFO), a bismuth ferrite, has been widely used in catalysis, electromagnetism, and gas sensor fields due to its narrow band gap (1.9–2.3 eV), chemical stability, and environmental friendliness . BFO has great photocatalytic activity in organic photodegradation because of its strong response to visible light. , Furthermore, ZIS has higher conduction band (CB) and valence band (VB) potentials than BFO. , Therefore, forming a type II or Z-scheme heterojunction between ZIS and BFO is deemed feasible, which can improve charge transfer and inhibit the recombination of photogenerated carriers. , To the best of our knowledge, however, BFO/ZIS nanocomposites have not been reported yet.…”