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A pyrochlore-structural oxynitride Nd2Ta2O5N2 with a visible light absorption edge of ca. 620 nm was explored for photocatalytic water splitting. Dual functions of Nd2Ta2O5N2 were confirmed by proton reduction and… Click to show full abstract
A pyrochlore-structural oxynitride Nd2Ta2O5N2 with a visible light absorption edge of ca. 620 nm was explored for photocatalytic water splitting. Dual functions of Nd2Ta2O5N2 were confirmed by proton reduction and water oxidation half-reactions through separately loading Pt or CoOx as a cocatalyst in the presence of the corresponding sacrificial reagent. Finally, the platinum modified sample (Pt/Nd2Ta2O5N2) was prepared and employed as the H2-evolving photocatalyst to fabricate an effective photocatalytic Z-scheme overall water splitting together with PtOx/WO3 as the O2-evolving photocatalyst and IO3-/I- as shuttle ions under visible light irradiation.
Journal Title: Chemical communications
Year Published: 2022
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