Bioinspired photoelectrochemical NADH regeneration based on a molecular catalyst-modified photocathode.

For photoelectrochemical NADH regeneration, an electrode-supported "lipid bilayer membrane" photocathode based on a p-Si semiconductor, an electron transport mediator (OBV 2+ ), and a [Rh(Cp*)(bpy)Cl] + catalyst was constructed by self-assembly. Mechanistic study shows that OBV 2+ can enhance the charge transfer between the semiconductor and catalyst, leading to a significant improvement of the NADH photo-regeneration rate.