Abstract
Strontium titanate (SrTiO3) as an oxide semiconductoris a promising candidate for photocatalytic water splitting. Thiswork investigates the p(6 x 2)-reconstructionof SrTiO3 as a possible cost-efficient variant of the photocatalyst.For this, we employ near-ambient pressure X-ray photoemission spectroscopyand X-ray absorption spectroscopy comparing the (1 x 1) and p(6 x 2)-reconstruction of the ...
Abstract
Strontium titanate (SrTiO3) as an oxide semiconductoris a promising candidate for photocatalytic water splitting. Thiswork investigates the p(6 x 2)-reconstructionof SrTiO3 as a possible cost-efficient variant of the photocatalyst.For this, we employ near-ambient pressure X-ray photoemission spectroscopyand X-ray absorption spectroscopy comparing the (1 x 1) and p(6 x 2)-reconstruction of the SrTiO3(001)surface. We demonstrate the stability of the reconstruction in a wateratmosphere. The importance of surface structures with low valencies,e.g., the trivalent pyramidal Ti-configuration, is emphasized; thesegive metallic surface states for optimal photocatalytic performance.
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