The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Element-specific anisotropic growth of shaped platinum alloy nanocrystals
Abstract
Morphological shape in chemistry and biology owes its existence to anisotropic growth and is closely coupled to distinct functionality. Although much is known about the principal growth mechanisms of monometallic shaped nanocrystals, the anisotropic growth of shaped alloy nanocrystals is still poorly understood. Using aberration-corrected scanning transmission electron microscopy, we reveal an element-specific anisotropic growth mechanism of platinum (Pt) bimetallic nano-octahedra where compositional anisotropy couples to geometric anisotropy. A Pt-rich phase evolves into precursor nanohexapods, followed by a slower step-induced deposition of an M-rich (M = Ni, Co, etc.) phase at the concave hexapod surface forming the octahedral facets. Our finding explains earlier reports on unusual compositional segregations and chemical degradation pathways of bimetallic polyhedral catalysts and may aid rational synthesis of shaped alloy catalysts with desired compositional patterns and properties.
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Cites
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Improved Oxygen Reduction Activity on Pt 3 Ni(111) via Increased Surface Site Availability
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Self-citationShape and Composition-Controlled Platinum Alloy Nanocrystals Using Carbon Monoxide as Reducing Agent
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Cited by
Reier, T., Nong, H. N., Teschner, D., Schlögl, R., & Strasser, P. (2017) · Advanced Energy Materials · doi:10.1002/aenm.201601275 · Cited by 1,253
Self-citationKongkanand, A., & Mathias, M. F. (2016) · The Journal of Physical Chemistry Letters · doi:10.1021/acs.jpclett.6b00216 · Cited by 1,202
Zhang, L., Zhao, Z., & Gong, J. (2017) · Angewandte Chemie International Edition · doi:10.1002/anie.201612214 · Cited by 1,048
Wang, P., Zhang, X., Zhang, J., Wan, S., Guo, S., Lu, G., Yao, J., & Huang, X. (2017) · Nature Communications · doi:10.1038/ncomms14580 · Cited by 860
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Metadata
- Authors
- Gan, L., Cui, C., Heggen, M., Dionigi, F., Rudi, S., & Strasser, P.
- Venue
- Science
- Published
- 2014-12-19
- Volume
- 346
- Issue
- 6216
- Pages
- 1502-1506
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2094668273
- Cited by
- 314
- References
- 11
- FWCI
- 17.72
- Type
- journal article
- Language
- en
- Open access
- closed
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- Gan, L., Cui, C., Heggen, M., Dionigi, F., Rudi, S., & Strasser, P. (2014). Element-specific anisotropic growth of shaped platinum alloy nanocrystals. Science. https://doi.org/10.1126/science.1261212
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