CdS quantum dot sensitized p-type NiO as photocathode with integrated cobaloxime in photoelectrochemical cell for water splitting

CdS sensitized NiO electrode was used as the photoactive cathode in a photoelectrochemical cell for water splitting, avoiding the use of a sacrificial electron donor. Photocurrent increment under visible light irradiation was observed after integration of [Co(dmgH)2(4-Me-py)Cl] (1) to the photocathode, suggesting 1 could accept electrons from photoexcited CdS for water reduction and NiO could move the holes in the valence band of CdS to anode for water oxidation.

Graphical abstractCobalt catalyst 1 was integrated to CdS sensitized NiO photocathode in photoelectrochemical cell (PEC) for water splitting without sacrificial electron donors. Photocurrent increment in PEC system was demonstrated under visible light irradiation.Figure optionsDownload full-size imageDownload as PowerPoint slide