Ostwald ripening in an oxide-on-metal system
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arXiv
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| Autores principales: | , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2021
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| _version_ | 1866916514745024512 |
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| author | Michalak, Natalia Ossowski, Tomasz Miłosz, Zygmunt Prieto, Mauricio J. Wang, Ying Werwiński, Mirosław Babacic, Visnja Genuzio, Francesca Vattuone, Luca Kiejna, Adam Schmidt, Thomas Lewandowski, Mikołaj |
| author_facet | Michalak, Natalia Ossowski, Tomasz Miłosz, Zygmunt Prieto, Mauricio J. Wang, Ying Werwiński, Mirosław Babacic, Visnja Genuzio, Francesca Vattuone, Luca Kiejna, Adam Schmidt, Thomas Lewandowski, Mikołaj |
| contents | Ostwald ripening is a well-known physicochemical phenomenon in which smaller particles, characterized by high surface energy, dissolve and feed the bigger ones that are thermodynamically more stable. The effect is commonly observed in solid and liquid solutions, as well as in systems consisting of supported metal clusters or liquid droplets. Here, we provide the first evidence for the occurrence of Ostwald ripening in an oxide-on-metal system which, in our case, consists of ultrathin iron monoxide (FeO) islands grown on Ru(0001) single-crystal support. The results reveal that the thermally-driven sintering of islands allows altering their fine structural characteristics, including size, perimeter length, defect density and stoichiometry, which are crucial, e.g., from the point of view of heterogeneous catalysis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2105_01229 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Ostwald ripening in an oxide-on-metal system Michalak, Natalia Ossowski, Tomasz Miłosz, Zygmunt Prieto, Mauricio J. Wang, Ying Werwiński, Mirosław Babacic, Visnja Genuzio, Francesca Vattuone, Luca Kiejna, Adam Schmidt, Thomas Lewandowski, Mikołaj Chemical Physics Mesoscale and Nanoscale Physics Materials Science Ostwald ripening is a well-known physicochemical phenomenon in which smaller particles, characterized by high surface energy, dissolve and feed the bigger ones that are thermodynamically more stable. The effect is commonly observed in solid and liquid solutions, as well as in systems consisting of supported metal clusters or liquid droplets. Here, we provide the first evidence for the occurrence of Ostwald ripening in an oxide-on-metal system which, in our case, consists of ultrathin iron monoxide (FeO) islands grown on Ru(0001) single-crystal support. The results reveal that the thermally-driven sintering of islands allows altering their fine structural characteristics, including size, perimeter length, defect density and stoichiometry, which are crucial, e.g., from the point of view of heterogeneous catalysis. |
| title | Ostwald ripening in an oxide-on-metal system |
| topic | Chemical Physics Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2105.01229 |