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On the Origin of the Unique Properties of Supported Au Nanoparticles
Abstract
The unique catalytic activity of supported Au nanoparticles has been ascribed to various effects including thickness/shape, the metal oxidation state, and support effects. Previously, we reported the synthesis of ordered Au monolayers and bilayers on TiO(x), with the latter being significantly more active for CO oxidation than the former. In the present study, the electronic and chemical properties of ordered monolayer and bilayer Au films have been characterized by infrared reflection adsorption spectroscopy using CO as a probe and ultraviolet photoemission spectroscopy. The Au overlayers are found to be electron-rich and to have significantly different electronic properties compared with bulk Au. The common structural features of ordered Au bilayers and Au bilayer nanoparticles on TiO2(110) are described, and the exceptionally high catalytic activity of the Au bilayer structure related to its unique electronic properties.
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Citations
Cites
Charging Effects on Bonding and Catalyzed Oxidation of CO on Au 8 Clusters on MgO
Yoon, B., Häkkinen, H., Landman, U., Wörz, A. S., Antonietti, J.-M., Abbet, S., Judai, K., & Heiz, U. (2005) · Science · doi:10.1126/science.1104168 · Cited by 1,430
Catalytic nanoarchitectures—The importance of nothing and the unimportance of periodicity
Rolison, D. R. (2003) · Science · doi:10.1126/science.1082332 · Cited by 1,037
Cited by
Catalysis by Supported Gold Nanoparticles: Beyond Aerobic Oxidative Processes
Stratakis, M., & Garcia, H. (2012) · Chemical Reviews · doi:10.1021/cr3000785 · Cited by 803
Metadata
- Authors
- Chen, Cai, Y., Yan, Z., & Goodman, D. W.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2006-04-25
- Volume
- 128
- Issue
- 19
- Pages
- 6341-6346
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2041954403
- Cited by
- 230
- References
- 2
- FWCI
- 14.76
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, Cai, Y., Yan, Z., & Goodman, D. W. (2006). On the Origin of the Unique Properties of Supported Au Nanoparticles. Journal of the American Chemical Society. https://doi.org/10.1021/ja0557536
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