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Shape Changes of Supported Rh Nanoparticles During Oxidation and Reduction Cycles
Abstract
The microscopic insight into how and why catalytically active nanoparticles change their shape during oxidation and reduction reactions is a pivotal challenge in the fundamental understanding of heterogeneous catalysis. We report an oxygen-induced shape transformation of rhodium nanoparticles on magnesium oxide (001) substrates that is lifted upon carbon monoxide exposure at 600 kelvin. A Wulff analysis of high-resolution in situ x-ray diffraction, combined with transmission electron microscopy, shows that this phenomenon is driven by the formation of a oxygen–rhodium–oxygen surface oxide at the rhodium nanofacets. This experimental access into the behavior of such nanoparticles during a catalytic cycle is useful for the development of improved heterogeneous catalysts.
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Citations
Cites
Atom-Resolved Imaging of Dynamic Shape Changes in Supported Copper Nanocrystals
Hansen, P. L., Wagner, J. B., Helveg, S., Rostrup-Nielsen, J. R., Clausen, B. S., & Topsøe, H. (2002) · Science · doi:10.1126/science.1069325 · Cited by 1,261
Cited by
Nanoparticulate Functional Materials
Goesmann, H., & Feldmann, C. (2010) · Angewandte Chemie International Edition · doi:10.1002/anie.200903053 · Cited by 733
Nanocatalysis: size- and shape-dependent chemisorption and catalytic reactivity
Roldan Cuenya, B., & Behafarid, F. (2015) · Surface Science Reports · doi:10.1016/j.surfrep.2015.01.001 · Cited by 388
Dynamical Observation and Detailed Description of Catalysts under Strong Metal–Support Interaction
Zhang, S., Plessow, P. N., Willis, J. J., Dai, S., Xu, M., Graham, G. W., Cargnello, M., Abild-Pedersen, F., & Pan, X. (2016) · Nano Letters · doi:10.1021/acs.nanolett.6b01769 · Cited by 312
Metal Nanoparticle Catalysts Beginning to Shape-up
Roldan Cuenya, B. (2013) · Accounts of Chemical Research · doi:10.1021/ar300226p · Cited by 258
Metadata
- Authors
- Nolte, P., Stierle, A., Jin-Phillipp, N. Y., Kasper, N., Schulli, T. U., & Dosch, H.
- Venue
- Science
- Published
- 2008-09-19
- Volume
- 321
- Issue
- 5896
- Pages
- 1654-1658
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2040531575
- Cited by
- 238
- References
- 1
- FWCI
- 10.44
- Type
- journal article
- Language
- en
- Open access
- closed
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- Nolte, P., Stierle, A., Jin-Phillipp, N. Y., Kasper, N., Schulli, T. U., & Dosch, H. (2008). Shape Changes of Supported Rh Nanoparticles During Oxidation and Reduction Cycles. Science. https://doi.org/10.1126/science.1160845
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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