EnglishIn this work we report the interfacial charge transfer between the Fe core and Ag shell in self-organized nanoparticles on MgO films on Mo(001). Predeposited Fe nanoparticles organize in a square network with long-range order on the oxide surface guided by the MgO coincidence lattice. When Ag is added, it covers the Fe nanoparticles, forming a shell. By means of XPS and UPS we show that a charge transfer occurs between the Fe core and the Ag shell, determining the oxidation of part of the Fe atoms and a negative charging of the Ag shell. This is confirmed by band bending and core level shifts. As a consequence of the Fe@Ag morphology and composition the plasmonic response of the nanoparticles is modified with respect to pure Ag nanoparticles.
Core-Shell Charge Transfer in Plasmonic Fe@Ag Nanoparticles on MgO Film / Benedetti, S.; Valenti, I.; Valeri, S.. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 123:13(2019), pp. 8206-8211.
| Data di pubblicazione: | 2019 |
| Titolo: | Core-Shell Charge Transfer in Plasmonic Fe@Ag Nanoparticles on MgO Film |
| Autore/i: | Benedetti, S.; Valenti, I.; Valeri, S. |
| Autore/i UNIMORE: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1021/acs.jpcc.8b08478 |
| Rivista: | |
| Volume: | 123 |
| Fascicolo: | 13 |
| Pagina iniziale: | 8206 |
| Pagina finale: | 8211 |
| Codice identificativo ISI: | WOS:000463844500070 |
| Codice identificativo Scopus: | 2-s2.0-85056729608 |
| Citazione: | Core-Shell Charge Transfer in Plasmonic Fe@Ag Nanoparticles on MgO Film / Benedetti, S.; Valenti, I.; Valeri, S.. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 123:13(2019), pp. 8206-8211. |
| Tipologia | Articolo su rivista |
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| File | Descrizione | Tipologia | |
|---|---|---|---|
| paper_5 for publication.pdf | Articolo principale | Post-print dell'autore (bozza post referaggio) | Open Access Visualizza/Apri |
http://hdl.handle.net/11380/1204735
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