Solar‐Driven Lignocellulose‐to‐H2 Conversion in Water using 2D‐2D MoS2/TiO2 Photocatalysts

As an alternative strategy for H2 production under ambient conditions, solar‐driven lignocellulose‐to‐H2 conversion provides a very attractive approach to store and utilize solar energy sustainably. Exploiting efficient photocatalyst for photocatalytic lignocellulose‐to‐H2 conversion is of huge significance and remains the key challenge for development of solar H2 generation from lignocellulose. Herein, 2D‐2D MoS2/TiO2 photocatalysts with large 2D nanojunction were constructed for photocatalytic lignocellulose‐to‐H2 conversion. In this smart structure, the 2D nanojunctions acted as efficient channel for charge transfer from TiO2 to MoS2 to improve charge separation efficiency and thus enhance photocatalytic lignocellulose‐to‐H2 conversion activity. The 2 % MoS2/TiO2 photocatalyst showed the highest photocatalytic lignocellulose‐to‐H2 conversion performance with the maximal H2 generation rate of 201 and 21.4 μmol h−1 g−1 in α‐cellulose and poplar wood chip aqueous solution, respectively. The apparent quantum yield at 380 nm reached 1.45 % for 2 % 2D‐2D TiO2/MoS2 photocatalyst in α‐cellulose aqueous solution. This work highlights the importance of optimizing the interface structures of photocatalyst for solar‐driven lignocellulose‐to‐H2 conversion. Fun in the sun: 2D‐2D MoS2/TiO2 photocatalysts with large 2D nanojunction are developed as a new strategy for solar‐driven photocatalytic lignocellulose‐to‐H2 conversion. The smartly designed structure of 2D‐2D MoS2/TiO2 photocatalysts provides abundant channels for charge transfer, resulting in high charge separation efficiency and good photocatalytic lignocellulose‐to‐H2 conversion activity.