Interfacial interaction in an organic–inorganic heterostructure via W–N bonds for enhanced photocatalytic H2 production

Abstract

We report the synthesis of two-dimensional conjugated organic frameworks-based organic–inorganic Z-scheme heterojunction (2D c-COFs/WO₃) for photocatalytic hydrogen (H₂) production. Under the optimal conditions, the H₂ production rate reaches 80.9 mmol g⁻¹ h⁻¹, ∼27 times that of pristine 2D c-COFs. The interfacial interaction of the W–N bond, according to hard–soft acid–base theory, effectively accelerates charge separation and prolongs charge-separation lifetime, thus enhanced H₂ production activity.