DOI: 10.1126/science.1159639. Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation

Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation

10.1126/science.1159639

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Gold nanocrystals absorbed on metal oxides have exceptional properties in oxidation catalysis, including the oxidation of carbon monoxide at ambient temperatures, but the identification of the active catalytic gold species among the many present on real catalysts is challenging. We have used aberration-corrected scanning transmission electron microscopy to analyze several iron oxide–supported catalyst samples, ranging from those with little or no activity to others with high activities. High catalytic activity for carbon monoxide oxidation is correlated with the presence of bilayer clusters that are ∼0.5 nanometer in diameter and contain only ∼10 gold atoms. The activity of these bilayer clusters is consistent with that demonstrated previously with the use of model catalyst systems.

Bibliography

Herzing, A. A., Kiely, C. J., Carley, A. F., Landon, P., & Hutchings, G. J. (2008). Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation. Science, 321(5894), 1331â1335.

Authors 5

Andrew A. Herzing (first)
Christopher J. Kiely (additional)
Albert F. Carley (additional)
Philip Landon (additional)
Graham J. Hutchings (additional)

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We thank the Athena project of the Engineering and Physical Sciences Research Council NSF NASA and the National Research Council Postdoctoral Associate program for funding this work.

Dates

Type	When
Created	16 years, 11 months ago (Sept. 7, 2008, 12:13 p.m.)
Deposited	1 year, 7 months ago (Jan. 10, 2024, 3:23 a.m.)
Indexed	1 week, 2 days ago (Aug. 12, 2025, 6:13 p.m.)
Issued	16 years, 11 months ago (Sept. 5, 2008)
Published	16 years, 11 months ago (Sept. 5, 2008)
Published Print	16 years, 11 months ago (Sept. 5, 2008)

Funders 0

None

BibTeX

@article{Herzing_2008, title={Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation}, volume={321}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1159639}, DOI={10.1126/science.1159639}, number={5894}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Herzing, Andrew A. and Kiely, Christopher J. and Carley, Albert F. and Landon, Philip and Hutchings, Graham J.}, year={2008}, month=sep, pages={1331–1335} }

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  "abstract": "<jats:p>Gold nanocrystals absorbed on metal oxides have exceptional properties in oxidation catalysis, including the oxidation of carbon monoxide at ambient temperatures, but the identification of the active catalytic gold species among the many present on real catalysts is challenging. We have used aberration-corrected scanning transmission electron microscopy to analyze several iron oxide\u2013supported catalyst samples, ranging from those with little or no activity to others with high activities. High catalytic activity for carbon monoxide oxidation is correlated with the presence of bilayer clusters that are \u223c0.5 nanometer in diameter and contain only \u223c10 gold atoms. The activity of these bilayer clusters is consistent with that demonstrated previously with the use of model catalyst systems.</jats:p>",
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