| Autor: |
Valeria Chesnyak, Srdjan Stavrić, Mirco Panighel, Daniele Povoledo, Simone del Puppo, Maria Peressi, Giovanni Comelli, Cristina Africh |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Small Structures, Vol 5, Iss 8, Pp n/a-n/a (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2688-4062 |
| DOI: |
10.1002/sstr.202400055 |
| Popis: |
To improve reactivity and achieve a higher material efficiency, catalysts are often used in the form of clusters with nanometer dimensions, down to single atoms. Since the corresponding properties are highly structure‐dependent, a suitable support is thus required to ensure cluster stability during operating conditions. Herein, an efficient method to stabilize cobalt nanoclusters on graphene grown on nickel substrates, exploiting the anchoring effect of nickel atoms incorporated in the carbon network is presented. The anchored nanoclusters are studied by in situ variable temperature scanning tunneling microscopy at different temperatures and upon gas exposure. Cluster stability upon annealing up to 200 °C and upon CO exposure at least up to 1 × 10−6 mbar CO partial pressure is demonstrated. Moreover, the dimensions of the cobalt nanoclusters remain surprisingly small ( |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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