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Related Experiment Video

Updated: Jun 4, 2026

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
07:14

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids

Published on: August 23, 2018

Patchy multishell segregation in Pd-Pt alloy nanoparticles.

Giovanni Barcaro1, Alessandro Fortunelli, Micha Polak

  • 1CNR-IPCF, Istituto per i Processi Chimico-Fisici, I-56124 Pisa, Italy.

Nano Letters
|March 4, 2011
PubMed
Summary

Platinum and palladium nanoparticles exhibit unique atomic arrangements. Larger palladium-rich nanoparticles show platinum segregation internally, while mixed compositions form novel multishell patterns.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Computational Chemistry

Background:

  • Understanding chemical ordering in bimetallic nanoparticles is crucial for their applications.
  • Extended systems of palladium-platinum (PdPt) alloys typically show palladium segregation at surfaces.

Purpose of the Study:

  • To investigate the atomic-scale chemical ordering in face-centered-cubic-like palladium-platinum (PdPt) nanoparticles.
  • To explore how particle size and composition influence the arrangement of Pd and Pt atoms.

Main Methods:

  • Density-functional calculations were employed to model PdPt nanoparticles.
  • A symmetry orbit approach was utilized to analyze atomic arrangements.

Main Results:

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A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles
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A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

Published on: April 10, 2019

High Resolution Physical Characterization of Single Metallic Nanoparticles
09:56

High Resolution Physical Characterization of Single Metallic Nanoparticles

Published on: June 28, 2019

Related Experiment Videos

Last Updated: Jun 4, 2026

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
07:14

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids

Published on: August 23, 2018

A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles
11:49

A Continuous-flow Photocatalytic Reactor for the Precisely Controlled Deposition of Metallic Nanoparticles

Published on: April 10, 2019

High Resolution Physical Characterization of Single Metallic Nanoparticles
09:56

High Resolution Physical Characterization of Single Metallic Nanoparticles

Published on: June 28, 2019

  • In larger Pd-rich nanoparticles, platinum atoms segregated to the core, contrary to bulk alloy behavior.
  • A unique multishell ordering pattern emerged in PdPt nanoparticles with compositions near 1:1.
  • This novel pattern features alternating shells with reversed island arrangements of Pd and Pt atoms.

    • Conclusions:

    • Coordination-dependent bond energies explain the observed chemical ordering in PdPt nanoparticles.
    • The findings offer insights into the properties and potential applications of nanoscale alloy particles.