Synthesis and characterization of novel Au(core)-Au/Pt alloy(shell) nanostructure

Ru Shi Liu; Hau Ming Chen; Shu Fen Hu

doi:10.1557/proc-818-m5.45.1

Synthesis and characterization of novel Au(core)-Au/Pt alloy(shell) nanostructure

Ru Shi Liu^*, Hau Ming Chen, Shu Fen Hu

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

A systematic study is reported about the amount-dependent morphology change in a series of Au-Pt bimetallic nanoparticles synthesized using chemical reduction. The amount of Au precursor is kept constant throughout whole series of compounds to obtain fixed Au core size (∼7.5 nm). The Au/Pt ratio is varied from 1/1 to 1/4 in order to synthesize Pt shell layer of different thickness. We observed a remarkable shift of surface plasmon band around 410 nm. With the aid of high resolution transmission electron microscope (HRTEM) and energy-dispersive spectrometer (EDS), the composition of shell layer is found to be Pt enriched Au-Pt alloy. As the amount of Pt increases, the Pt clusters formed a string-like shape on the surface of nanoparticles. The average diameter of these Pt clusters is about 2 nm. This special structure may exhibit unique catalytic property.

Original language	English
Pages (from-to)	163-168
Number of pages	6
Journal	Materials Research Society Symposium Proceedings
Volume	818
DOIs	https://doi.org/10.1557/proc-818-m5.45.1
Publication status	Published - 2004
Externally published	Yes
Event	Nanoparticles and Nanowire Building Blocks - Synthesis, Processing, Characterization and Theory - San Francisco, CA, United States Duration: 2004 Apr 13 → 2004 Apr 16

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1557/proc-818-m5.45.1

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title = "Synthesis and characterization of novel Au(core)-Au/Pt alloy(shell) nanostructure",

abstract = "A systematic study is reported about the amount-dependent morphology change in a series of Au-Pt bimetallic nanoparticles synthesized using chemical reduction. The amount of Au precursor is kept constant throughout whole series of compounds to obtain fixed Au core size (∼7.5 nm). The Au/Pt ratio is varied from 1/1 to 1/4 in order to synthesize Pt shell layer of different thickness. We observed a remarkable shift of surface plasmon band around 410 nm. With the aid of high resolution transmission electron microscope (HRTEM) and energy-dispersive spectrometer (EDS), the composition of shell layer is found to be Pt enriched Au-Pt alloy. As the amount of Pt increases, the Pt clusters formed a string-like shape on the surface of nanoparticles. The average diameter of these Pt clusters is about 2 nm. This special structure may exhibit unique catalytic property.",

author = "Liu, {Ru Shi} and Chen, {Hau Ming} and Hu, {Shu Fen}",

year = "2004",

doi = "10.1557/proc-818-m5.45.1",

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volume = "818",

pages = "163--168",

journal = "Materials Research Society Symposium Proceedings",

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publisher = "Materials Research Society",

note = "Nanoparticles and Nanowire Building Blocks - Synthesis, Processing, Characterization and Theory ; Conference date: 13-04-2004 Through 16-04-2004",

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TY - JOUR

T1 - Synthesis and characterization of novel Au(core)-Au/Pt alloy(shell) nanostructure

AU - Liu, Ru Shi

AU - Chen, Hau Ming

AU - Hu, Shu Fen

PY - 2004

Y1 - 2004

N2 - A systematic study is reported about the amount-dependent morphology change in a series of Au-Pt bimetallic nanoparticles synthesized using chemical reduction. The amount of Au precursor is kept constant throughout whole series of compounds to obtain fixed Au core size (∼7.5 nm). The Au/Pt ratio is varied from 1/1 to 1/4 in order to synthesize Pt shell layer of different thickness. We observed a remarkable shift of surface plasmon band around 410 nm. With the aid of high resolution transmission electron microscope (HRTEM) and energy-dispersive spectrometer (EDS), the composition of shell layer is found to be Pt enriched Au-Pt alloy. As the amount of Pt increases, the Pt clusters formed a string-like shape on the surface of nanoparticles. The average diameter of these Pt clusters is about 2 nm. This special structure may exhibit unique catalytic property.

AB - A systematic study is reported about the amount-dependent morphology change in a series of Au-Pt bimetallic nanoparticles synthesized using chemical reduction. The amount of Au precursor is kept constant throughout whole series of compounds to obtain fixed Au core size (∼7.5 nm). The Au/Pt ratio is varied from 1/1 to 1/4 in order to synthesize Pt shell layer of different thickness. We observed a remarkable shift of surface plasmon band around 410 nm. With the aid of high resolution transmission electron microscope (HRTEM) and energy-dispersive spectrometer (EDS), the composition of shell layer is found to be Pt enriched Au-Pt alloy. As the amount of Pt increases, the Pt clusters formed a string-like shape on the surface of nanoparticles. The average diameter of these Pt clusters is about 2 nm. This special structure may exhibit unique catalytic property.

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DO - 10.1557/proc-818-m5.45.1

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SN - 0272-9172

VL - 818

SP - 163

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JO - Materials Research Society Symposium Proceedings

JF - Materials Research Society Symposium Proceedings

T2 - Nanoparticles and Nanowire Building Blocks - Synthesis, Processing, Characterization and Theory

Y2 - 13 April 2004 through 16 April 2004

ER -

Synthesis and characterization of novel Au(core)-Au/Pt alloy(shell) nanostructure

Abstract

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