Interfacial Interaction in Organic-Inorganic Heterostructure via W-N Bond 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, H2 production rate reaches 80.9 mmol/g/h, ~27 times that of pristine 2D c-COFs. The interfacial interaction of W-N bond, according to hard and soft acid-base theory, effectively accelerates charge separation and prolongs charge-separation lifetime, thus achieving enhanced H2 production activity.