Solar-Driven Lignocellulose-to-H Conversion in Water using 2D-2D MoS /TiO Photocatalysts.

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