Surface Passivation Engineering for Photoelectrochemical Water Splitting

Surface passivation engineering is an imperative way to improve photoelectrode performance for photoelectrochemical (PEC) water splitting. To the best of our knowledge, it has never been systematically reviewed in a feature article. In this review, we summarize various materials and their preparation, characterizations by PEC measurements some related spectral technologies. We highlight features effect that separate from other modifications, such as cocatalyst decoration, demonstrate significant progress combining surface with interfacial modification strategies rational design photoelectrodes. Ideas future research on improving photoelectrodes are also proposed.