Atomic-Scale Interface for Pt Nanoparticles on SrTiO3 (001)
Source abstract
Abstract
The interfacial structure formed by Pt nanoparticles grown epitaxially on a SrTiO 3 (001) surface by pulsed laser deposition was studied by X-ray standing-wave (XSW) excited core-level photoelectron emission. The XSW-generated 3D atomic map of the Pt and interfacial oxygens for the oxidized Pt/SrTiO 3 interface differs significantly from that of the as-deposited interface. After oxidation, the Pt atoms shifted upward and their atomic occupation at fcc-like sites evolved as the oxidation temperature increased. Interfacial oxygen atoms were differentiated from bulk O atoms by the chemical shift in the binding energy of their 1s electrons. After oxidation, the interfacial oxygen atoms rearranged to form a TiO 2 bilayer at the interface. These results provide a more complete description of the strong metal–support interaction process at the interface.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electronic and Structural Properties of Oxides · Semiconductor materials and devices · Advanced Materials Characterization Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
CLS@APS, Canadian Light Source, Saskatoon, SK S7N 2 V3, Canada
Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, United States
Funding
Basic Energy Sciences · Argonne National Laboratory
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