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Related Experiment Video

Updated: Aug 30, 2025

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles
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Morphological Evolution Trajectory of Multifaceted Palladium Nanoparticles.

Ho Hyeon Kim1, Sang Won Im1, Nam Heon Cho1

  • 1Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea.

The Journal of Physical Chemistry Letters
|August 30, 2022
PubMed
Summary

Researchers precisely controlled palladium nanoparticle morphology and facets using a seed-mediated colloidal method. This led to the discovery of a new cuborhombicube structure, advancing nanomaterial design for catalysis and sensing.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Catalysis

Background:

  • Precise control over palladium (Pd) nanomaterial morphology and facets is crucial for optimizing catalytic and sensing applications.
  • Existing methods for synthesizing tailored nanomaterials often lack the fine-tuning required for specific facet exposure.

Purpose of the Study:

  • To synthesize Pd nanoparticles with diverse low-Miller-index-faceted morphologies.
  • To investigate the morphological evolution of Pd nanoparticles under controlled synthesis conditions.
  • To discover novel Pd nanoparticle morphologies and understand their formation mechanisms.

Main Methods:

  • Utilized a seed-mediated colloidal preparation method.
  • Systematically varied synthesis conditions, including the cooperative effects of cetyltrimethylammonium bromide and ascorbic acid.
  • Tracked morphological evolution by analyzing surface Miller indices.

Main Results:

  • Successfully synthesized Pd nanoparticles with multiple low-Miller-index-faceted morphologies.
  • Discovered a new cuborhombicube morphology in Pd nanoparticles, characterized by 36 facets and concave edges.
  • Established a correlation between synthesis conditions, surface Miller indices, and resulting nanoparticle morphology.

Conclusions:

  • The study provides critical insights into controlling nanoparticle morphology and facet exposure.
  • The findings offer a pathway for designing functional nanomaterials with tailored surface properties for enhanced performance.
  • The discovered cuborhombicube morphology represents a novel structure for potential applications in catalysis and sensing.