Basics of Ostwald Ripening of Supported Metallic Alloy Nanoparticles Full article
| Journal |
Chemical Physics
ISSN: 0301-0104 |
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| Output data | Year: 2026, Volume: 603, Article number : 113067, Pages count : 9 DOI: 10.1016/j.chemphys.2025.113067 | ||
| Tags | Catalytic metal nanoparticles; Alloy; Deactivation; Ostwald ripening; Kinetic model; DFT calculations | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | FWUR-2024-0032 |
Abstract:
Herein, the kinetics of Ostwald ripening of supported metal nanoparticles (MNPs) made of two miscible metals is scrutinized theoretically. The whole process is treated as the interplay of two channels including rapid support-mediated redistribution of atoms with smaller sublimation energy and slow redistribution of atoms with larger sublimation energy, so that the growth of the average MNP size is related primarily to the latter channel. The equation derived for this size is similar to that for MNPs made of pure metals and can be easily integrated and employed in applications. The corresponding activation energies and specific surface free energies depend on the alloy composition, and the analysis proposed allows one to describe this effect. In illustrations, it has been done for MNPs made of typical metals used in heterogeneous catalysis by employing the parameters obtained on the basis of the density functional theory.
Cite:
Zhdanov V.P.
Basics of Ostwald Ripening of Supported Metallic Alloy Nanoparticles
Chemical Physics. 2026. V.603. 113067 :1-9. DOI: 10.1016/j.chemphys.2025.113067 WOS Scopus AN OpenAlex
Basics of Ostwald Ripening of Supported Metallic Alloy Nanoparticles
Chemical Physics. 2026. V.603. 113067 :1-9. DOI: 10.1016/j.chemphys.2025.113067 WOS Scopus AN OpenAlex
Dates:
| Submitted: | Sep 20, 2025 |
| Accepted: | Dec 15, 2025 |
| Published online: | Dec 16, 2025 |
| Published print: | Apr 1, 2026 |
Identifiers:
| Web of science: | WOS:001645529700001 |
| Scopus: | 2-s2.0-105025057351 |
| Chemical Abstracts: | 2025:3148665 |
| OpenAlex: | W4417356359 |