Compositional inhomogeneity of Pd70Ag30 alloy nanoparticles

Kuan Wen Wang; Shu Ru Chung; Ling Yun Jang; Jyh Fu Lee; Tsong P. Perng

Compositional inhomogeneity of Pd₇₀Ag₃₀ alloy nanoparticles

Kuan Wen Wang, Shu Ru Chung, Ling Yun Jang, Jyh Fu Lee, Tsong P. Perng

Graduate Institute of Materials Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Taiwan The compositional inhomogeneity of Pd₇₀Ag₃₀ nanoparticles is studied. The composition of the as-prepared Pd ₇₀Ag₃₀ nanoparticles by chemical reduction across the diameter is inhomogeneous due to different reduction potentials of Pd and Ag. During the heat treatment, Ag will migrate to the surface because of its lower surface energy. Surface modification can change the surface energy and composition during the oxidation and sintering processes. Surface modification of Pd₇₀Ag₃₀ nanoparticles by polyethylene glycol will decrease the surface energy of Ag and assist the diffusion of Ag from the core to the surface. This makes the nanoparticles easier to sinter together. Surface modification by stearic acid has the opposite effect and results in less sintering of the nanoparticles.

Original language	English
Title of host publication	2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Editors	M. Laudon, B. Romanowicz
Pages	130-133
Number of pages	4
State	Published - 2003
Event	2003 Nanotechnology Conference and Trade Show - Nanotech 2003 - San Francisco, CA, United States Duration: 23 Feb 2003 → 27 Feb 2003

Publication series

Name	2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Volume	3

Conference

Conference	2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Country/Territory	United States
City	San Francisco, CA
Period	23/02/03 → 27/02/03

Keywords

Nanoparticle
Pdag
Polyethylene glycol
Stearic acid
Surface modification

Cite this

@inproceedings{f9ee96152d5949c1a2d07e6c099567e7,

title = "Compositional inhomogeneity of Pd70Ag30 alloy nanoparticles",

abstract = "Taiwan The compositional inhomogeneity of Pd70Ag30 nanoparticles is studied. The composition of the as-prepared Pd 70Ag30 nanoparticles by chemical reduction across the diameter is inhomogeneous due to different reduction potentials of Pd and Ag. During the heat treatment, Ag will migrate to the surface because of its lower surface energy. Surface modification can change the surface energy and composition during the oxidation and sintering processes. Surface modification of Pd70Ag30 nanoparticles by polyethylene glycol will decrease the surface energy of Ag and assist the diffusion of Ag from the core to the surface. This makes the nanoparticles easier to sinter together. Surface modification by stearic acid has the opposite effect and results in less sintering of the nanoparticles.",

keywords = "Nanoparticle, Pdag, Polyethylene glycol, Stearic acid, Surface modification",

author = "Wang, {Kuan Wen} and Chung, {Shu Ru} and Jang, {Ling Yun} and Lee, {Jyh Fu} and Perng, {Tsong P.}",

year = "2003",

language = "???core.languages.en_GB???",

isbn = "0972842209",

series = "2003 Nanotechnology Conference and Trade Show - Nanotech 2003",

pages = "130--133",

editor = "M. Laudon and B. Romanowicz",

booktitle = "2003 Nanotechnology Conference and Trade Show - Nanotech 2003",

note = "2003 Nanotechnology Conference and Trade Show - Nanotech 2003 ; Conference date: 23-02-2003 Through 27-02-2003",

}

Wang, KW, Chung, SR, Jang, LY, Lee, JF & Perng, TP 2003, Compositional inhomogeneity of Pd₇₀Ag₃₀ alloy nanoparticles. in M Laudon & B Romanowicz (eds), 2003 Nanotechnology Conference and Trade Show - Nanotech 2003. 2003 Nanotechnology Conference and Trade Show - Nanotech 2003, vol. 3, pp. 130-133, 2003 Nanotechnology Conference and Trade Show - Nanotech 2003, San Francisco, CA, United States, 23/02/03.

Compositional inhomogeneity of Pd₇₀Ag₃₀ alloy nanoparticles. / Wang, Kuan Wen; Chung, Shu Ru; Jang, Ling Yun et al.
2003 Nanotechnology Conference and Trade Show - Nanotech 2003. ed. / M. Laudon; B. Romanowicz. 2003. p. 130-133 (2003 Nanotechnology Conference and Trade Show - Nanotech 2003; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Compositional inhomogeneity of Pd70Ag30 alloy nanoparticles

AU - Wang, Kuan Wen

AU - Chung, Shu Ru

AU - Jang, Ling Yun

AU - Lee, Jyh Fu

AU - Perng, Tsong P.

PY - 2003

Y1 - 2003

N2 - Taiwan The compositional inhomogeneity of Pd70Ag30 nanoparticles is studied. The composition of the as-prepared Pd 70Ag30 nanoparticles by chemical reduction across the diameter is inhomogeneous due to different reduction potentials of Pd and Ag. During the heat treatment, Ag will migrate to the surface because of its lower surface energy. Surface modification can change the surface energy and composition during the oxidation and sintering processes. Surface modification of Pd70Ag30 nanoparticles by polyethylene glycol will decrease the surface energy of Ag and assist the diffusion of Ag from the core to the surface. This makes the nanoparticles easier to sinter together. Surface modification by stearic acid has the opposite effect and results in less sintering of the nanoparticles.

AB - Taiwan The compositional inhomogeneity of Pd70Ag30 nanoparticles is studied. The composition of the as-prepared Pd 70Ag30 nanoparticles by chemical reduction across the diameter is inhomogeneous due to different reduction potentials of Pd and Ag. During the heat treatment, Ag will migrate to the surface because of its lower surface energy. Surface modification can change the surface energy and composition during the oxidation and sintering processes. Surface modification of Pd70Ag30 nanoparticles by polyethylene glycol will decrease the surface energy of Ag and assist the diffusion of Ag from the core to the surface. This makes the nanoparticles easier to sinter together. Surface modification by stearic acid has the opposite effect and results in less sintering of the nanoparticles.

KW - Nanoparticle

KW - Pdag

KW - Polyethylene glycol

KW - Stearic acid

KW - Surface modification

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M3 - 會議論文篇章

AN - SCOPUS:6344231343

SN - 0972842209

T3 - 2003 Nanotechnology Conference and Trade Show - Nanotech 2003

SP - 130

EP - 133

BT - 2003 Nanotechnology Conference and Trade Show - Nanotech 2003

A2 - Laudon, M.

A2 - Romanowicz, B.

T2 - 2003 Nanotechnology Conference and Trade Show - Nanotech 2003

Y2 - 23 February 2003 through 27 February 2003

ER -