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Periodic Arrays of Metal Nanoclusters on Ultrathin Fe-Oxide Films Modulated by Metal-Oxide Interactions
- Source :
- JACS Au; January 2023, Vol. 3 Issue: 1 p176-184, 9p
- Publication Year :
- 2023
-
Abstract
- Rational design of highly stable and active metal catalysts requires a deep understanding of metal–support interactions at the atomic scale. Here, ultrathin films of FeO and FeO2–xgrown on Pt(111) are used as templates for the construction of well-defined metal nanoclusters. Periodic arrays of Cu clusters in the form of monomers and trimers are preferentially located at FCC domains of FeO/Pt(111) surface, while the selective location of Cu clusters at FeO2domains is observed on FeO2–x/Pt(111) surface. The preferential nucleation and formation of well-ordered Cu clusters are driven by different interactions of Cu with the Fe oxide domains in the sequence of FeO2-FCC > FeO-FCC > FeO-HCP > FeO-TOP, which is further validated by density functional theory calculations. It has been revealed that the p-band center as a reactivity descriptor of surface O atoms determines the interaction between metal adatoms and Fe oxides. The modulated metal-oxide interaction provides guidance for the rational design of supported single-atom and nanocluster catalysts.
Details
- Language :
- English
- ISSN :
- 26913704
- Volume :
- 3
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- JACS Au
- Publication Type :
- Periodical
- Accession number :
- ejs61488990
- Full Text :
- https://doi.org/10.1021/jacsau.2c00580