Enhanced water splitting through two-step photoexcitation by sunlight using tantalum/nitrogen-codoped rutile titania as a water oxidation photocatalyst

Rutile TiO 2 codoped with tantalum and nitrogen (TiO 2 :Ta,N) was assessed as a water oxidation photocatalyst for Z-scheme water splitting driven by visible light. This material was prepared by thermal ammonolysis of TiO 2 :Ta with dry NH 3 at 773 K, while samples of the oxide precursor were synthes...

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