ArticleNature communications2024
The role of surface substitution in the atomic disorder-to-order phase transition in multi-component core-shell structures.
Article in Nature communications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Oxidation-Induced Internal Chemical Patterning in Copper-Gold Nanoalloys.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
- Sub-4-nm PtScience advances · 2026Article
- Self-reduced Pd nanoparticles on NiMn-LDHs with superior catalytic activity for signal amplification in electrochemical aptasensing of Mycobacterium tuberculosis ESAT-6 antigen.Mikrochimica acta · 2025Article
- Three-dimensional network of multi-fold twins enabled by geometrically necessary amorphous zones.Nature communications · 2025Article
- Microwave-Driven Crystallographic Alignment for Producing Metal (M) Thin Films with Highly-Oriented M(111) Surface.Small (Weinheim an der Bergstrasse, Germany) · 2025Article
Corrections and comments
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Authors and funding
11 authors.
Funding
Abstract
Intermetallic phases with atomic ordering are highly active and stable in catalysts. However, understanding the atomistic mechanisms of disorder-to-order phase transition, particularly in multi-component systems, remains challenging. Here, we investigate the atom diffusion and phase transition within Pd@Pt-Co cubic nanoparticles during annealing, using in-situ electron microscopy and ex-situ atomic resolution element analysis. We reveal that initial outward diffusing Pd partially substitutes Pt, forming a (Pt, Pd)-Co ternary system in the surface region, enabling the phase transition at a low temperature of 400 °C, followed by shape-preserved inward propagation of the ordered phase. At higher temperatures, excessive interdiffusion across the interface changes the stoichiometric ratio, diminishing the atomic ordering, leading to obvious change in morphology. Calculations indicate that the Pd-substitute in (Pt, Pd)-Co system leads to a significantly lower phase transition temperature compared to that of Pt-Co alloy and thus a lower activation energy for atomic diffusion. These insights into atomistic behavior are crucial for future design of multi-component systems.
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Registered trials
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