Visible‐Light‐Driven Photocatalytic Cellulose‐to‐H2 Conversion by MoS2/ZnIn2S4 Photocatalyst with Cellulase Assistance

Visible-light-driven photocatalytic cellulose-to-H₂ conversion system was successfully designed by using MoS₂ /ZnIn₂ S₄ 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 H₂ through photocatalytic reaction over MoS₂ /ZnIn₂ S₄ under visible light irradiation. The optimum H₂ 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 % MoS₂ /ZnIn₂ S₄ , 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 H₂ conversion system that combine photocatalysis and enzyme technology.