Morphology and surface plasma changes of Au-Pt bimetallic nanoparticles

Hao Ming Chen, Hsin Chieh Peng, Ru Shi Liu*, Shu Fen Hu, Hwo Shuenn Sheu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In this study, we examined the amount-dependent change in morphology in a series of Au-Pt bimetallic nanoparticles synthesized using chemical reduction. The amount of Au precursor was kept constant throughout the experiment. The Au/Pt molar ratio was varied from 1/1 to 1/4 to synthesize Pt shell layers with different thicknesses. We observed a remarkable shift of the surface plasmon band at around 410 nm. By high-resolution transmission electron microscopy (HRTEM) and energy-dispersive spectrometry (EDS), the composition of the shell layer was found to be Pt-enriched Au-Pt alloy. As the concentration of Pt increases, Pt clusters (ca. 1.8 nm in diameter) form a string-like shape on the surface of nanoparticles.

Original languageEnglish
Pages (from-to)1411-1415
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number5
Publication statusPublished - 2006 May
Externally publishedYes


  • Au/Pt
  • Bimetallic
  • Core-Shell
  • Nanoparticles

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics


Dive into the research topics of 'Morphology and surface plasma changes of Au-Pt bimetallic nanoparticles'. Together they form a unique fingerprint.

Cite this