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Enhanced Bonding of Gold Nanoparticles on Oxidized TiO 2 (110)
Abstract
We studied the nucleation of gold clusters on TiO 2 (110) surfaces in three different oxidation states by high-resolution scanning tunneling microscopy. The three TiO 2 (110) supports chosen were (i) reduced (having bridging oxygen vacancies), (ii) hydrated (having bridging hydroxyl groups), and (iii) oxidized (having oxygen adatoms). At room temperature, gold nanoclusters nucleate homogeneously on the terraces of the reduced and oxidized supports, whereas on the hydrated TiO 2 (110) surface, clusters form preferentially at the step edges. From interplay with density functional theory calculations, we identified two different gold-TiO 2 (110) adhesion mechanisms for the reduced and oxidized supports. The adhesion of gold clusters is strongest on the oxidized support, and the implications of this finding for catalytic applications are discussed.
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Cites
The surface science of titanium dioxide
Diebold, U. (2003) · Surface Science Reports · doi:10.1016/s0167-5729(02)00100-0 · Cited by 7,944
Cited by
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Qiao, B., Wang, A., Yang, X., Allard, L. F., Jiang, Z., Cui, Y., Liu, J., Li, J., & Zhang, T. (2011) · Nature Chemistry · doi:10.1038/nchem.1095 · Cited by 7,526
Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation
Herzing, A. A., Kiely, C. J., Carley, A. F., Landon, P., & Hutchings, G. J. (2008) · Science · doi:10.1126/science.1159639 · Cited by 1,530
Catalysis by Supported Gold Nanoparticles: Beyond Aerobic Oxidative Processes
Stratakis, M., & Garcia, H. (2012) · Chemical Reviews · doi:10.1021/cr3000785 · Cited by 803
Parkinson, G. S. (2016) · Surface Science Reports · doi:10.1016/j.surfrep.2016.02.001 · Cited by 608
Zhang, J., Wu, X., Cheong, W.-C., Chen, W., Lin, R., Li, J., Zheng, L., Yan, W., Gu, L., Chen, C., et al. (2018) · Nature Communications · doi:10.1038/s41467-018-03380-z · Cited by 354
Metadata
- Authors
- Matthey, D., Wang, J. G., Wendt, S., Matthiesen, J., Schaub, R., Lægsgaard, E., Hammer, B., & Besenbacher, F.
- Venue
- Science
- Published
- 2007-03-23
- Volume
- 315
- Issue
- 5819
- Pages
- 1692-1696
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2035548551
- Cited by
- 482
- References
- 1
- FWCI
- 23.22
- Type
- journal article
- Language
- en
- Open access
- closed
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- Matthey, D., Wang, J. G., Wendt, S., Matthiesen, J., Schaub, R., Lægsgaard, E., Hammer, B., & Besenbacher, F. (2007). Enhanced Bonding of Gold Nanoparticles on Oxidized TiO 2 (110). Science. https://doi.org/10.1126/science.1135752
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
