Interplay between metal‒support interaction and stability in Pt/Co3O4(111) model catalysts
Y. Lykhach et al., J. Mater. Chem. A. 6, 23078 (2018); DOI: 10.1039/C8TA08142E
The interplay between metal‒support interaction and thermal stability of Pt nanoparticles supported on well-ordered Co
3 O
4(111)/Ir(100) films have been investigated by means of synchrotron radiation photoelectron spectroscopy. We found that
the electronic metal‒support interaction gives rise to the formation of partially oxidized Pt
δ+ species at the Pt/Co
3O
4(111) interface. The stability of the supported Pt particles is coupled to the oxidation state of Pt
δ+ species, which can be reduced or oxidized depending on the Pt coverage and reactive environment.
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