Figure 10.

Selected hybrid photocatalysts/photoelectrodes engineered by assembling an OEC or a HER catalyst with a semiconductor. Ir-molecular OEC catalyst covalently grafted onto a dye-sensitized TiO₂ electrode (a) [102,103]; Co₃O₄ OEC within α-Fe₂O₃ nanowires photoanode (b) [104]; immobilization of a [NiFeSe]-hydrogenase onto dye-sensitized TiO₂ nanoparticles (c) [105]; immobilization of a synthetic FeFe-molecular HER catalyst within a mesoporous InP electrode (d) [106]; Si/MoS₂ photocathode (e) [107].