Hybrid photocathode consisting of a CuGaO 2 p-type semiconductor and a Ru( ii )–Re( i ) supramolecular photocatalyst: non-biased visible-light-driven CO 2 reduction with water oxidation

A new Ru( ii )–Re( i )/CuGaO ₂ hybrid photocathode was developed and combined with a CoO _x /TaON photoanode to drive non-biased visible-light-driven CO ₂ reduction with water oxidation.