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Size- and Support-Dependent Electronic and Catalytic Properties of Au0/Au3+ Nanoparticles Synthesized from Block Copolymer Micelles
Abstract
Supported Au nanoclusters synthesized from diblock copolymer micelles can be reliably prepared with well-controlled sizes and dispersions. For particles with diameters between approximately 1 and 6 nm, the particle size and the support were found to strongly influence the oxygen reactivity, the formation and stabilization of a metal-oxide, and the catalytic activity for electrooxidation of carbon monoxide. The smallest particles studied (1.5 nm) were the most active for electrooxidation of CO and had the largest fraction of oxygen associated with gold at the surface as measured by the Au(3+)/Au(0) X-ray photoemission intensities. Conducting and semiconducting substrates, ITO-coated glass and TiO(2), respectively, were associated with greater stabilization of Au(3+) oxide as compared to insulating, SiO(2), substrates.
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Cited by
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Metadata
- Authors
- Cuenya, B. R., Baeck, S.-H., Jaramillo, T. F., & McFarland, E. W.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-09-26
- Volume
- 125
- Issue
- 42
- Pages
- 12928-12934
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2012137813
- Cited by
- 215
- References
- 0
- FWCI
- 4.87
- Type
- journal article
- Language
- en
- Open access
- closed
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- Cuenya, B. R., Baeck, S.-H., Jaramillo, T. F., & McFarland, E. W. (2003). Size- and Support-Dependent Electronic and Catalytic Properties of Au0/Au3+ Nanoparticles Synthesized from Block Copolymer Micelles. Journal of the American Chemical Society. https://doi.org/10.1021/ja036468u
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