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Metallic Glass Nanoparticles Synthesized via Flash Joule Heating.

Hang Wang1, Nathan Makowski1, Yuanyuan Ma1

  • 1Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, New York, New York 11201, United States.

ACS Nano
|May 15, 2025
PubMed
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Flash Joule heating enables one-step synthesis of metallic glass (MG) nanoparticles with controlled phase, composition, and morphology. These novel MG nanoparticles exhibit enhanced oxygen evolution activity and stability for catalytic applications.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Catalysis

Background:

  • Metallic glass (MG) nanoparticles are of significant interest for mechanical and catalytic uses.
  • Current synthesis methods struggle with precise control over phase, composition, and morphology, hindering structure-property relationship studies.

Purpose of the Study:

  • To develop a one-step synthesis method for metallic glass nanoparticles with controlled properties.
  • To investigate the structure-property relationships and catalytic performance of synthesized MG nanoparticles.

Main Methods:

  • Utilized flash Joule heating (FJH) for direct, one-step synthesis of MG nanoparticles.
  • Achieved precise control over alloy composition and particle size (2.33 nm ± 0.83 nm) through FJH's rapid cooling capabilities.
  • Synthesized fully amorphous Pd-P, Pd-Ni-P, and Pd-Cu-P nanoparticles.
Keywords:
alloy nanoparticlesflash Joule heatingmetallic glassmetastable phasenanoparticlesternary alloysternary phase diagram

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Main Results:

  • Successfully produced amorphous metallic glass nanoparticles with tunable phase, composition, and morphology.
  • Demonstrated significantly improved oxygen evolution activity (∼300 mV lower onset potential) compared to crystalline counterparts.
  • Confirmed long-term stability of the MG nanoparticles over 60 hours of testing.

Conclusions:

  • Flash Joule heating is an effective method for synthesizing controlled metallic glass nanoparticles.
  • The synthesized MG nanoparticles show great promise for advanced catalytic applications, particularly in oxygen evolution reactions.
  • Precise control over nanoparticle characteristics via FJH facilitates deeper understanding of structure-property correlations.