Electron microscopy of noble metal alloy nanoparticles prepared by sonochemical methods

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

doi:10.1016/S0965-9773(99)00076-8

Electron microscopy of noble metal alloy nanoparticles prepared by sonochemical methods

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

Trans-Regional Corporation Center for Industrial Materials Research

Research output: Contribution to journal › Conference article › peer-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 language	English
Pages (from-to)	111-114
Number of pages	4
Journal	Nanostructured Materials
Volume	12
Issue number	1
DOIs	https://doi.org/10.1016/S0965-9773(99)00076-8
Publication status	Published - 1999 Jan 1
Event	Proceedings of the 1998 4th International Conference on Nanostructured Materials (NANO '98) - Stockholm, Swed Duration: 1998 Jun 14 → 1998 Jun 19

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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title = "Electron microscopy of noble metal alloy nanoparticles prepared by sonochemical methods",

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.",

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AU - Oshima, R.

AU - Yamamoto, T. A.

AU - Mizukoshi, Y.

AU - Nagata, Y.

AU - Maeda, Y.

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AB - 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.

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