Construction of α‐Fe ₂ O ₃ /g‐C ₃ N ₄ /COF Ternary Hybrid with Double Z‐Scheme Heterojunctions for Photocatalysis**

Abstract By report, Z‐scheme heterojunction can markedly improve the photocatalytic performance of semiconductor materials. Thus, we rationally designed and successfully prepared α‐Fe 2 O 3 /g‐C 3 N 4 /covalent organic framework (COF) ternary photocatalyst with double Z‐scheme heterojunctions. XRD, FT‐IR, and TEM characterized results demonstrated its successful construction. Further characterization results revealed that the existing double Z‐scheme heterojunctions endow the material with superior photoelectric properties and realize the synergy among the three components, thus achieving the excellent separation of photo‐generated carriers. Consequently, it exhibited excellent performance in the photocatalytic degradation of tetracycline (TC). Therefore, the double Z‐scheme heterojunction strategy proposed in this study established a promising approach for constructing high‐efficiency photocatalysts.