DOI: 10.1126/science.1182122. Break-Up of Stepped Platinum Catalyst Surfaces by High CO Coverage

Break-Up of Stepped Platinum Catalyst Surfaces by High CO Coverage

10.1126/science.1182122

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

From Steps to Clusters When a flat surface of a single crystal is formed by cutting or cleavage, the atoms may move little from their bulk positions, or the surface may reconstruct as the atoms move to more energetically favorable positions. The adsorption of molecules can also change the energetic landscape and cause reconstruction. Tao et al. (p. 850 ; see the Perspective by Altman ) examined “stepped” platinum surfaces, the (557) and (332) surfaces in which flat terraces are connected by atomic steps. Scanning tunneling microscopy and x-ray photoelectron spectroscopy revealed a reversible breakup into nanometer-scale clusters when CO surface coverages were very high. Density functional theory calculations suggest that this new morphology increases the number of edge sites for adsorption and relieves unfavorable CO-CO repulsions.

Bibliography

Tao, F., Dag, S., Wang, L.-W., Liu, Z., Butcher, D. R., Bluhm, H., Salmeron, M., & Somorjai, G. A. (2010). Break-Up of Stepped Platinum Catalyst Surfaces by High CO Coverage. Science, 327(5967), 850â853.

Authors 8

Feng Tao (first)
Sefa Dag (additional)
Lin-Wang Wang (additional)
Zhi Liu (additional)
Derek R. Butcher (additional)
Hendrik Bluhm (additional)
Miquel Salmeron (additional)
Gabor A. Somorjai (additional)

References 24 Referenced 491

G. Ertl H. Knözinger F. Schüth J. Weitkamp Handbook of Heterogeneous Catalysis (VCH-Wiley Weinheim Germany 2008). (10.1002/9783527610044)
G. A. Somorjai Introduction to Surface Chemistry and Catalysis (VCH-Wiley Weinheim Germany 1997).
10.1021/cr030063a
10.1016/0039-6028(93)90684-C
10.1103/PhysRevLett.77.534
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10.1021/jp0492218

Dates

Type	When
Created	15 years, 6 months ago (Feb. 11, 2010, 2:39 p.m.)
Deposited	1 year, 7 months ago (Jan. 10, 2024, 4:02 a.m.)
Indexed	3 days, 15 hours ago (Aug. 20, 2025, 8:56 a.m.)
Issued	15 years, 6 months ago (Feb. 12, 2010)
Published	15 years, 6 months ago (Feb. 12, 2010)
Published Print	15 years, 6 months ago (Feb. 12, 2010)

Funders 0

None

BibTeX

@article{Tao_2010, title={Break-Up of Stepped Platinum Catalyst Surfaces by High CO Coverage}, volume={327}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1182122}, DOI={10.1126/science.1182122}, number={5967}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Tao, Feng and Dag, Sefa and Wang, Lin-Wang and Liu, Zhi and Butcher, Derek R. and Bluhm, Hendrik and Salmeron, Miquel and Somorjai, Gabor A.}, year={2010}, month=feb, pages={850–853} }

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