A Molecular Z-Scheme Artificial Photosynthetic System Under the Bias-Free Condition for CO Reduction Coupled with Two-electron Water Oxidation: Photocatalytic Production of CO/HCOOH and H O.

Bio-inspired molecular-engineered systems have been extensively investigated for the half-reactions of H O oxidation or CO reduction with sacrificial electron donors/acceptors. However, there has yet to be reported a device for dye-sensitized molecular photoanodes coupled with molecular photocathodes in an aqueous solution without the use of sacrificial reagents. Herein, we will report the integration of Sn - or Al -tetrapyridylporphyrin (SnTPyP or AlTPyP) decorated tin oxide particles (SnTPyP/SnO or AlTPyP/SnO ) photoanode with the dye-sensitized molecular photocathode on nickel oxide particles containing [Ru(diimine) ] as the light-harvesting unit and [Ru(diimine)(CO) Cl ] as the catalyst unit covalently connected and fixed within poly-pyrrole layer (RuCAT-RuC -PolyPyr-PRu/NiO).

Solar-Driven Photoelectrochemical Water Oxidation over an n-Type Lead-Titanium Oxyfluoride Anode.

Mixed-anion compounds (e.g., oxynitrides and oxysulfides) are potential candidates as photoanodes for visible-light water oxidation, but most of them suffer from oxidative degradation by photogenerated holes, leading to low stability.