Recyclable dual Z-scheme perovskite/g-C3N4 heterojunction enables photoredox nickel-catalyzed C(sp2)–C(sp3) cross-electrophile coupling

heterojunction. The stepped band structure and dual Z-scheme carrier migration paths significantly enhance photocatalytic performance by synergistically increasing redox potentials and extending the lifetime of photogenerated charge carriers through efficient interfacial charge transfer. Leveraging this heterojunction, we have developed a nickel/photoredox dual-catalyzed cross-electrophile coupling between aryl iodides and alkyl halides, affording the desired products with up to 98% yields.