Photocatalytic water oxidation with hematite electrodes

摘要: Hematite's favorable 2.1 eV band gap, valence position, stability, abundance, and light absorption properties make it a promising semiconductor material for solar-driven water oxidation. While mechanism oxidation at the surface of hematite has not yet been experimentally established, is widely agreed upon that surface-state mediated charge recombination electrode–electrolyte interface competes with This kinetic competition ultimately limits splitting efficiency. The identity role these states in reaction still unclear. perspective presents recent results probing photocatalytic electrodes states. In addition, function coatings on surface, their as catalysts or passivation materials, are discussed.