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Related Experiment Video

Updated: Feb 7, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles
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Pd-Ru core-shell nanoparticles with tunable shell thickness for active and stable oxygen evolution performance.

Lucy Gloag1, Tania M Benedetti1, Soshan Cheong2

  • 1School of Chemistry, The University of New South Wales, Sydney, NSW 2052, Australia. r.tilley@unsw.edu.au and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW 2052, Australia.

Nanoscale
|August 4, 2018
PubMed
Summary
This summary is machine-generated.

Stabilizing ruthenium (Ru) nanoparticles for oxygen evolution reaction (OER) catalysis is crucial. Palladium-ruthenium (Pd-Ru) core-shell nanoparticles enhance Ru stability up to 10x while maintaining high catalytic activity.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Ruthenium (Ru) nanoparticles are promising oxygen evolution reaction (OER) catalysts.
  • Stabilizing Ru is essential for maintaining high activity and durability.
  • Current methods often struggle to balance stability and catalytic performance.

Purpose of the Study:

  • To develop a synthesis for palladium-ruthenium (Pd-Ru) core-shell nanoparticles.
  • To investigate the effect of tunable shell thickness on OER performance.
  • To enhance the stability of Ru-based OER catalysts.

Main Methods:

  • Synthesis of Pd-Ru core-shell nanoparticles with controlled shell thicknesses (0.3-1.2 nm).
  • Characterization of nanoparticle structure and composition.
  • Electrochemical testing to evaluate OER activity and stability.

Main Results:

  • Pd-Ru core-shell nanoparticles demonstrated significantly enhanced stability (up to 10x) compared to pure Ru.
  • High catalytic activity, comparable to pure Ru nanoparticles, was maintained.
  • Optimal performance was achieved with thin Ru shells and complete Pd core coverage.

Conclusions:

  • Pd-Ru core-shell nanostructures offer a viable strategy for stabilizing Ru OER catalysts.
  • Nanoparticle shell thickness is a critical parameter influencing both activity and stability.
  • This approach paves the way for more durable and efficient OER electrocatalysts.