X-ray synthesis of nickel-gold composite nanoparticles

Chong Cook Kim; Changhai Wang; Yung Chin Yang; Yeu Kuang Hwu; Seung Kwon Seol; Yong Bum Kwon; Chih Hsiung Chen; Huey Wen Liou; Hong Ming Lin; Giorgio Margaritondo; Jung Ho Je

doi:10.1016/j.matchemphys.2006.01.001

X-ray synthesis of nickel-gold composite nanoparticles

Chong Cook Kim
, Changhai Wang
, Yung Chin Yang
, Yeu Kuang Hwu
, Seung Kwon Seol
, Yong Bum Kwon
, Chih Hsiung Chen
, Huey Wen Liou
, Hong Ming Lin
, Giorgio Margaritondo
, Jung Ho Je

Graduate Institute of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

We developed a novel approach to prepare Ni-Au composite nanoparticles using synchrotron radiation X-rays. Ni-Au particles dispersed in aqueous solutions were synthesized with two different irradiation strategies. The first is by exposing to X-rays a mixed electroless solution of Ni and Au at two different temperatures, trying to nucleate Ni nanoparticles homogeneously at room temperature and to deposit Au subsequently on them at the high temperature of 70 °C. The second strategy is to change the pH value of the mixed solution, directly leading to the formation of Ni-Au nanoparticles. In both cases, the Ni-Au composite nanoparticles were successfully formed, as confirmed by the observed ferromagnetic behavior and by the evolution of the Au surface plasmon resonance band.

Original language	English
Pages (from-to)	292-295
Number of pages	4
Journal	Materials Chemistry and Physics
Volume	100
Issue number	2-3
DOIs	https://doi.org/10.1016/j.matchemphys.2006.01.001
State	Published - 10 Dec 2006

Bibliographical note

Funding Information:
We wish to thank G.M. Chow for the stimulating discussion in characterizing the samples. This work was supported by MOST(KOSEF) through the National Core Research Center (Systems Bio-Dynamics) and SKORE-A projects, by the Strategic National R&D Program of Ministry of commerce, industry and energy (MOCIE), by the BK21 Project, by the National Science Council (Taiwan), by the Academia Sinica (Taiwan), by the Swiss Fonds National de la Recherche Scientifique and by the EPFL.

Keywords

Ni-Au composite nanoparticles
Synchrotron radiation X-rays
Synthesis
X-ray induced nucleation

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10.1016/j.matchemphys.2006.01.001

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title = "X-ray synthesis of nickel-gold composite nanoparticles",

abstract = "We developed a novel approach to prepare Ni-Au composite nanoparticles using synchrotron radiation X-rays. Ni-Au particles dispersed in aqueous solutions were synthesized with two different irradiation strategies. The first is by exposing to X-rays a mixed electroless solution of Ni and Au at two different temperatures, trying to nucleate Ni nanoparticles homogeneously at room temperature and to deposit Au subsequently on them at the high temperature of 70 °C. The second strategy is to change the pH value of the mixed solution, directly leading to the formation of Ni-Au nanoparticles. In both cases, the Ni-Au composite nanoparticles were successfully formed, as confirmed by the observed ferromagnetic behavior and by the evolution of the Au surface plasmon resonance band.",

keywords = "Ni-Au composite nanoparticles, Synchrotron radiation X-rays, Synthesis, X-ray induced nucleation",

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AU - Kwon, Yong Bum

AU - Chen, Chih Hsiung

AU - Liou, Huey Wen

AU - Lin, Hong Ming

AU - Margaritondo, Giorgio

AU - Je, Jung Ho

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Y1 - 2006/12/10

N2 - We developed a novel approach to prepare Ni-Au composite nanoparticles using synchrotron radiation X-rays. Ni-Au particles dispersed in aqueous solutions were synthesized with two different irradiation strategies. The first is by exposing to X-rays a mixed electroless solution of Ni and Au at two different temperatures, trying to nucleate Ni nanoparticles homogeneously at room temperature and to deposit Au subsequently on them at the high temperature of 70 °C. The second strategy is to change the pH value of the mixed solution, directly leading to the formation of Ni-Au nanoparticles. In both cases, the Ni-Au composite nanoparticles were successfully formed, as confirmed by the observed ferromagnetic behavior and by the evolution of the Au surface plasmon resonance band.

AB - We developed a novel approach to prepare Ni-Au composite nanoparticles using synchrotron radiation X-rays. Ni-Au particles dispersed in aqueous solutions were synthesized with two different irradiation strategies. The first is by exposing to X-rays a mixed electroless solution of Ni and Au at two different temperatures, trying to nucleate Ni nanoparticles homogeneously at room temperature and to deposit Au subsequently on them at the high temperature of 70 °C. The second strategy is to change the pH value of the mixed solution, directly leading to the formation of Ni-Au nanoparticles. In both cases, the Ni-Au composite nanoparticles were successfully formed, as confirmed by the observed ferromagnetic behavior and by the evolution of the Au surface plasmon resonance band.

KW - Ni-Au composite nanoparticles

KW - Synchrotron radiation X-rays

KW - Synthesis

KW - X-ray induced nucleation

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X-ray synthesis of nickel-gold composite nanoparticles

Abstract

Bibliographical note

Keywords

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