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Atomically Precise Nanometer-Sized Pt Catalysts with an Additional Photothermy Functionality.

Runguo Wang1,2,3, Dong Chen4, Liang Fang1,3

  • 1Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China.

Angewandte Chemie (International Ed. in English)
|April 8, 2024
PubMed
Summary
This summary is machine-generated.

Researchers synthesized ~1-nm platinum nanoclusters (Pt NCs) using a mixture ligand strategy. These stable Pt NCs show enhanced catalytic activity for oxygen reduction and high photothermal conversion efficiency, paving the way for advanced applications.

Keywords:
ORRPt nanoclusterambient stabilityatomically precisephotothermy

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Catalysis

Background:

  • Atomically precise platinum nanoclusters (Pt NCs) are crucial for catalysis and biomedicine.
  • Synthesizing stable, ~1-nm Pt NCs remains a significant challenge in materials science.

Purpose of the Study:

  • To develop a robust synthesis method for large, stable, ~1-nm Pt NCs.
  • To investigate the catalytic and photothermal properties of the synthesized Pt NCs.

Main Methods:

  • Mixture ligand protecting strategy for nanoparticle synthesis.
  • Mass spectrometry and single-crystal X-ray diffraction for precise characterization.
  • Density functional theory and d-band center calculations for activity interpretation.

Main Results:

  • Successfully synthesized the largest organic-ligand-protected (~1-nm) Pt23 NCs.
  • Observed unique charge distribution within the Pt23 NC kernel.
  • Achieved significantly higher specific and mass activities for oxygen reduction reaction compared to commercial catalysts.
  • Demonstrated a photothermal conversion efficiency of 68.4% with good reusability.

Conclusions:

  • The developed synthesis strategy yields highly active and stable Pt NCs.
  • Pt23 NCs offer superior performance in catalysis and photothermal applications.
  • These findings highlight the potential of precisely engineered Pt NCs for practical use.