A platinum porphyrin modified TiO2 electrode for photoelectrochemical hydrogen production from neutral water driven by the conduction band edge potential of TiO2.

The onset potential for H2 production from neutral water (pH 7) catalyzed by a platinum(ii) porphyrin (PtP-py) modified TiO2 electrode positions very close to the standard water reduction potential (less than 50 mV). H2 production is driven by the conduction band edge potential of TiO2 at the PtP-py-modified TiO2 cathode.