Enhancing Photocatalytic Hydrogen Production via the Construction of Robust Multivariate Ti?MOF/COF Composites

Titanium metal–organic frameworks (Ti-MOFs), as an appealing type of artificial photocatalyst, have shown great potential in the field solar energy conversion due to their well-studied photoredox activity (similar TiO2) and good optical responsiveness linkers, which serve antenna absorb visible-light. Although much effort has been dedicated developing Ti-MOFs with high photocatalytic activity, performances are still poor. Herein, we implemented a covalent-integration strategy construct series multivariate Ti-MOF/COF hybrid materials PdTCPP?PCN-415(NH2)/TpPa (composites 1, 2, 3), featuring excellent visible-light utilization, suitable band gap, surface area for H2 production. Notably, resulting composites demonstrated remarkably enhanced visible-light-driven evolution performance, especially composite 2 maximum rate 13.98 mmol g?1 h?1 (turnover frequency (TOF)=227 h?1), is higher than that PdTCPP?PCN-415(NH2) (0.21 h?1) TpPa (6.51 h?1). Our work thereby suggests new approach highly efficient photocatalysts beyond.