Environmentally Stable p(6 × 2) SrTiO3(001) Surface Reconstruction with Low-Valent Ti for Photocatalytic Water Splitting

Lehner, Jennifer Marie and Ramirez, Lucia Perez and Kubsky, Stefan and Gallet, Jean-Jacques and Bournel, Fabrice and Dudy, Lenart (2023) Environmentally Stable p(6 × 2) SrTiO3(001) Surface Reconstruction with Low-Valent Ti for Photocatalytic Water Splitting. JOURNAL OF PHYSICAL CHEMISTRY C, 127 (34). pp. 17285-17289. ISSN 1932-7447, 1932-7455

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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.

Item Type: Article
Uncontrolled Keywords: NANOSTRUCTURES;
Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry & allied sciences
Divisions: Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller
Depositing User: Dr. Gernot Deinzer
Date Deposited: 13 Mar 2024 15:09
Last Modified: 13 Mar 2024 15:10
URI: https://pred.uni-regensburg.de/id/eprint/60014

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