Strain-Driven Honeycomb Reconstruction of Multilayered Rh/Pt(111).

Abdulla Bin Afif, Oleksii Ivashenko, Alexandra Jahr Kolstad, Anja Olafsen Sjåstad

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Article in ACS applied materials & interfaces, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Abdulla Bin AfifCentre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo, Norway.ORCID 0000-0002-9951-0320

Oleksii IvashenkoCentre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo, Norway.ORCID 0000-0002-3265-4506

Alexandra Jahr KolstadCentre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo, Norway.

Anja Olafsen SjåstadCentre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo, Norway.ORCID 0000-0001-9280-541X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study reports on a long-range ordered honeycomb surface structure formed by annealing of Rh multilayers on Pt(111). Scanning tunneling microscopy reveals a honeycomb network with a lateral periodicity of ∼15 nm and ∼0.07 nm corrugation, most pronounced at ∼11.2 ML Rh coverage and annealing at 700 K. In situ X-ray photoelectron spectroscopy at 700 K, combined with diffusion calculations, indicates Pt surface enrichment and Pt-Rh intermixing driven by surface and grain boundary diffusion, while bulk diffusion remains negligible. At 900 K, bulk diffusion becomes dominant, and the honeycomb structure is disrupted upon prolonged annealing. The honeycombs arise from an interplay among Rh coverage, annealing time and temperature, and Pt-Rh mixing dynamics and are driven by interfacial strain due to lattice mismatch, which relaxes through surface reorganization. These findings highlight the delicate interplay of atomic diffusion and strain-driven reconstruction in bimetallic nanostructure evolution.

Indexed as

Atomic diffusionHoneycomb networkIn situ X-ray photoelectron spectroscopyLow-energy electron diffractionPt−Rh catalystScanning tunneling microscopyStrain-driven surface reconstruction

Identifiers

PMID42184170

DOI10.1021/acsami.5c25647

PMCPMC13244363

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