Visible-Light-Driven Photocatalytic Cellulose-to-H 2 Conversion by MoS 2 /ZnIn 2 S 4 Photocatalyst with Cellulase Assistance.

Visible-light-driven photocatalytic cellulose-to-H 2 conversion system was successfully designed by using MoS 2 /ZnIn 2 S 4 as the photocatalyst and cellulase as the enzyme catalyst. At first, the cellulose was converted to glucose by cellulase. The generated glucose acted as an efficient hole trapper and electron donor, which was further converted into H 2 through photocatalytic reaction over MoS 2 /ZnIn 2 S 4 under visible light irradiation. The optimum H 2 generation rate achieved under visible light irradiation (λ>420 nm) was 12.2 μmol ⋅ h -1  ⋅ g -1 in the presence of 100 mg of 3 % MoS 2 /ZnIn 2 S 4 , 100 mg cellulase and 2 g poplar wood chip. These results open up a new possibility for the development of efficient visible-light-responding photocatalytic cellulose to H 2 conversion system that combine photocatalysis and enzyme technology.