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Updated: Apr 22, 2026

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A Three-Component Strategy for Synthesizing High-Entropy Alloy Nanoparticles with High-Index Facets.

Zihao Ye1,2, Dohun Kang2,3, Bo Shen1,2

  • 1Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.

Journal of the American Chemical Society
|April 20, 2026
PubMed
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This summary is machine-generated.

Researchers developed a new method to control the shape and high-index facets (HIFs) of high-entropy alloy (HEA) nanoparticles. This breakthrough enables scalable materials discovery using tetrahexahedral (THH)-shaped HIF-HEAs.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Alloy Chemistry

Background:

  • Controlling nanoparticle shape and exposed facets, particularly high-index facets (HIFs), is crucial for advanced material properties but remains challenging.
  • High-entropy alloys (HEAs) offer unique properties due to their complex compositions, but their nanoparticle synthesis with controlled facets is underdeveloped.

Purpose of the Study:

  • To develop a controllable synthesis strategy for high-entropy alloy nanoparticles with specific shapes and exposed high-index facets.
  • To demonstrate the scalability and generalizability of this method for materials discovery.

Main Methods:

  • A three-component synthesis involving alloying with Gallium (Ga) and a volatile metal, followed by selective dealloying.
  • Liquid-metal mediation to stabilize the high-entropy alloy phase and the high-index facets.

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  • Fabrication of nanoparticle megalibraries with controlled size and composition.

    • Main Results:

    • Successfully synthesized tetrahexahedral (THH)-shaped high-entropy alloy nanoparticles with {210} high-index facets (HIFs).
    • Achieved control over nanoparticle shape and facet exposure through a combined alloying-dealloying strategy.
    • Demonstrated the creation of millions of THH-shaped HIF-HEAs on chips, showcasing scalability.

    Conclusions:

    • The reported method provides unprecedented control over HEA nanoparticle morphology and facet engineering.
    • This scalable approach facilitates high-throughput materials discovery for novel HEA nanoparticles.
    • The synthesized THH-shaped HIF-HEAs hold promise for various advanced applications.