HOF skeleton analogues construct fast carrier transfer channels for enhanced photocatalytic hydrogen production

Photocatalytic water splitting is an ideal approach for hydrogen production due to its cleanability, high-efficiency, and persistence. However, single-semiconductor catalysts suffer from challenges such as slow charge transfer and high electron recombination rates. An effective approach to improve photocatalytic performance is the formation of heterojunctions using surface-loaded catalysts. In this study, a highly efficient and facile method was used to synthesize a Hydrogen bonded organic framework (HOF), which was then assembled onto Co/CoO by taking advantage of its unique compositional stability. The synergy between the two components enabled the HC-10 composite to achieve efficient hydrogen production, while preserving stability. The composite catalyst reduces the electron transfer distance between the two catalysts, enhancing their electron transfer capabilities and minimizing electron-hole recombination, which is crucial for effective catalytic reactions. Furthermore, the directional interactions due to hydrogen bonding and π-π stacking further enhance the stability of the composite catalyst. This approach provides a new perspective on the application of organic materials in photocatalysis.