Electron microscopy of noble metal alloy nanoparticles prepared by sonochemical methods

R. Oshima, T. A. Yamamoto, Y. Mizukoshi, Y. Nagata, Y. Maeda

Research output: Contribution to journalConference articlepeer-review

21 Citations (Scopus)

Abstract

Argon-saturated aqueous solutions of NaAuCl4 and PdCl2 or K2PtCl4 were reduced simultaneously by ultrasound irradiation to prepare noble metal alloy nanoparticles. Droplets recovered from colloidal dispersions were placed on carbon-supported copper grids, and dried in a vacuum. They were examined by TEM, HRTEM, and nano-area energy dispersion X-ray spectroscopy (EDX). The Au-Pd nanoparticles exhibited monodispersive distribution (8 nm), and consisted of a gold core and a palladium shell. Au-Pt alloys nanoparticles could not be produced from NaAuCl4 and K2PtCl4 aqueous solutions either by simultaneous or successive reduction.

Original languageEnglish
Pages (from-to)111-114
Number of pages4
JournalNanostructured Materials
Volume12
Issue number1
DOIs
Publication statusPublished - 1999
EventProceedings of the 1998 4th International Conference on Nanostructured Materials (NANO '98) - Stockholm, Swed
Duration: 1998 Jun 141998 Jun 19

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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