Optimized H 2 -evolving dye-sensitized LaFeO 3 photocathodes prepared via the layer-by-layer assembly of dyes and catalysts.

A molecular dye and a molecular catalyst were loaded onto the surface of a mesoporous LaFeO 3 (LFO) film via layer-by-layer assembly relying on the coordination of phosphates and Zr 4+ . After assembling six layers of the dye and four layers of the catalyst, the (NiP-4 + PQA-6)@LFO photocathode exhibited a significant photocurrent for light-driven H 2 generation.