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

Ru Shi Liu, Hau Ming Chen, Shu-Fen Hu

Research output: Contribution to journalConference article

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 languageEnglish
Pages (from-to)163-168
Number of pages6
JournalMaterials Research Society Symposium Proceedings
Volume818
Publication statusPublished - 2004 Dec 1
EventNanoparticles and Nanowire Building Blocks - Synthesis, Processing, Characterization and Theory - San Francisco, CA, United States
Duration: 2004 Apr 132004 Apr 16

Fingerprint

Nanostructures
Nanoparticles
nanoparticles
synthesis
Spectrometers
Electron microscopes
strings
electron microscopes
spectrometers
electron energy
shift
high resolution
Chemical analysis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Synthesis and characterization of novel Au(core)-Au/Pt alloy(shell) nanostructure. / Liu, Ru Shi; Chen, Hau Ming; Hu, Shu-Fen.

In: Materials Research Society Symposium Proceedings, Vol. 818, 01.12.2004, p. 163-168.

Research output: Contribution to journalConference article

@article{1d8305d5e0f8484bb8df5bc80fa7aee8,
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 Shu-Fen Hu",
year = "2004",
month = "12",
day = "1",
language = "English",
volume = "818",
pages = "163--168",
journal = "Materials Research Society Symposium - Proceedings",
issn = "0272-9172",
publisher = "Materials Research Society",

}

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 - 2004/12/1

Y1 - 2004/12/1

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.

UR - http://www.scopus.com/inward/record.url?scp=12744259316&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=12744259316&partnerID=8YFLogxK

M3 - Conference article

VL - 818

SP - 163

EP - 168

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

SN - 0272-9172

ER -