DOI: 10.1063/1.1619943. Surface structure of Co–Pd bimetallic particles supported on Al2O3 thin films studied using infrared reflection absorption spectroscopy of CO

Surface structure of Co–Pd bimetallic particles supported on Al2O3 thin films studied using infrared reflection absorption spectroscopy of CO

10.1063/1.1619943

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

Infrared reflection absorption spectroscopy of CO has been used as a surface-sensitive probe for the available binding sites of Co–Pd bimetallic particles supported on a thin alumina film. A high-coverage state is obtained on the Co particles in addition to atop sites, attributable to a M(CO)n species. Bridge and threefold sites are not detected from CO stretching on the Co particles. When both metals are deposited sequentially at 300 K, Pd easily forms a shell on existing Co particles. In the reverse order, much more Co is required to coat Pd particles, because it nucleates between Pd particles as well as on top of them. For both metals, atop sites are better preserved at various bimetallic compositions because they are statistically less vulnerable than threefold hollow sites. The stretching frequency of CO to a given site is nearly independent of the bimetallic composition.

Bibliography

Carlsson, A. F., BÃ¤umer, M., Risse, T., & Freund, H.-J. (2003). Surface structure of CoâPd bimetallic particles supported on Al2O3 thin films studied using infrared reflection absorption spectroscopy of CO. The Journal of Chemical Physics, 119(20), 10885â10894.

Authors 4

A. F. Carlsson (first)
M. Bäumer (additional)
T. Risse (additional)
H.-J. Freund (additional)

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Dates

Type	When
Created	21 years, 8 months ago (Dec. 3, 2003, 2:29 p.m.)
Deposited	1 year, 6 months ago (Feb. 10, 2024, 11:11 a.m.)
Indexed	1 month, 2 weeks ago (July 16, 2025, 9:30 a.m.)
Issued	21 years, 9 months ago (Nov. 22, 2003)
Published	21 years, 9 months ago (Nov. 22, 2003)
Published Print	21 years, 9 months ago (Nov. 22, 2003)

Funders 0

None

BibTeX

@article{Carlsson_2003, title={Surface structure of Co–Pd bimetallic particles supported on Al2O3 thin films studied using infrared reflection absorption spectroscopy of CO}, volume={119}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1619943}, DOI={10.1063/1.1619943}, number={20}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Carlsson, A. F. and Bäumer, M. and Risse, T. and Freund, H.-J.}, year={2003}, month=nov, pages={10885–10894} }

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