Nanoparticles of gold on γ-Al2O3 produced by dc magnetron sputtering

Gabriel M. Veith; Andrew R. Lupini; Stephen J. Pennycook; Gary W. Ownby; Nancy J. Dudney

doi:10.1016/j.jcat.2004.12.008

Nanoparticles of gold on γ-Al₂O₃ produced by dc magnetron sputtering

Gabriel M. Veith, Andrew R. Lupini, Stephen J. Pennycook, Gary W. Ownby, Nancy J. Dudney

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

97 Scopus citations

Abstract

This paper describes a one-step magnetron sputtering technique for the preparation of supported catalyst particles that has a number of advantages over existing methods. In order to demonstrate the effectiveness of this technique, a supported gold on γ-Al₂O₃ oxidation catalyst has been prepared. This catalyst is as active as catalysts prepared via traditional chemical methods for the oxidation of carbon monoxide (TOF 1.1 conversions/surface Au atom/second at 300 K and 16% CO/8% O₂/He). Aberration-corrected scanning transmission electron microscopy demonstrates that this technique produces gold nanoparticles in a size range that is claimed in the literature to be most active (about 2 nm).

Original language	English
Pages (from-to)	151-158
Number of pages	8
Journal	Journal of Catalysis
Volume	231
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2004.12.008
State	Published - Apr 1 2005

Funding

The authors thank Tamara Keever of ORNL's Chemical Sciences Division for assistance with ICP and Art Baddorf for help with XPS. This research was sponsored by the U.S. Department of Energy's Division of Materials Science under contract DE-AC05-00OR22725, with ORNL, managed and operated by UT-Battelle, LLC. G.M.V. and A.R.L. were supported by appointments to the Oak Ridge National Laboratory Postdoctoral Research Associates Program, administered jointly by the Oak Ridge Institute for Science and Education and Oak Ridge National Laboratory.

Keywords

Aberration-corrected STEM
CO oxidation
Gold nanoparticles
Oxidation catalysts
Sputtering
XPS
γ-AlO

Access to Document

10.1016/j.jcat.2004.12.008

Cite this

@article{f09e97cdca474dc6a1c48b902113b64c,

title = "Nanoparticles of gold on γ-Al2O3 produced by dc magnetron sputtering",

abstract = "This paper describes a one-step magnetron sputtering technique for the preparation of supported catalyst particles that has a number of advantages over existing methods. In order to demonstrate the effectiveness of this technique, a supported gold on γ-Al2O3 oxidation catalyst has been prepared. This catalyst is as active as catalysts prepared via traditional chemical methods for the oxidation of carbon monoxide (TOF 1.1 conversions/surface Au atom/second at 300 K and 16% CO/8% O2/He). Aberration-corrected scanning transmission electron microscopy demonstrates that this technique produces gold nanoparticles in a size range that is claimed in the literature to be most active (about 2 nm).",

keywords = "Aberration-corrected STEM, CO oxidation, Gold nanoparticles, Oxidation catalysts, Sputtering, XPS, γ-AlO",

author = "Veith, {Gabriel M.} and Lupini, {Andrew R.} and Pennycook, {Stephen J.} and Ownby, {Gary W.} and Dudney, {Nancy J.}",

year = "2005",

month = apr,

day = "1",

doi = "10.1016/j.jcat.2004.12.008",

language = "English",

volume = "231",

pages = "151--158",

journal = "Journal of Catalysis",

issn = "0021-9517",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Nanoparticles of gold on γ-Al2O3 produced by dc magnetron sputtering

AU - Veith, Gabriel M.

AU - Lupini, Andrew R.

AU - Pennycook, Stephen J.

AU - Ownby, Gary W.

AU - Dudney, Nancy J.

PY - 2005/4/1

Y1 - 2005/4/1

N2 - This paper describes a one-step magnetron sputtering technique for the preparation of supported catalyst particles that has a number of advantages over existing methods. In order to demonstrate the effectiveness of this technique, a supported gold on γ-Al2O3 oxidation catalyst has been prepared. This catalyst is as active as catalysts prepared via traditional chemical methods for the oxidation of carbon monoxide (TOF 1.1 conversions/surface Au atom/second at 300 K and 16% CO/8% O2/He). Aberration-corrected scanning transmission electron microscopy demonstrates that this technique produces gold nanoparticles in a size range that is claimed in the literature to be most active (about 2 nm).

AB - This paper describes a one-step magnetron sputtering technique for the preparation of supported catalyst particles that has a number of advantages over existing methods. In order to demonstrate the effectiveness of this technique, a supported gold on γ-Al2O3 oxidation catalyst has been prepared. This catalyst is as active as catalysts prepared via traditional chemical methods for the oxidation of carbon monoxide (TOF 1.1 conversions/surface Au atom/second at 300 K and 16% CO/8% O2/He). Aberration-corrected scanning transmission electron microscopy demonstrates that this technique produces gold nanoparticles in a size range that is claimed in the literature to be most active (about 2 nm).

KW - Aberration-corrected STEM

KW - CO oxidation

KW - Gold nanoparticles

KW - Oxidation catalysts

KW - Sputtering

KW - XPS

KW - γ-AlO

UR - http://www.scopus.com/inward/record.url?scp=15944376953&partnerID=8YFLogxK

U2 - 10.1016/j.jcat.2004.12.008

DO - 10.1016/j.jcat.2004.12.008

M3 - Article

AN - SCOPUS:15944376953

SN - 0021-9517

VL - 231

SP - 151

EP - 158

JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 1

ER -