The local structure and chemical disorder of a commercially available Pt3Co nanocatalyst supported on high surface area carbon were investigated. High-quality XAFS spectra were collected at the ELETTRA synchrotron XAFS 11.1 beamline. XAFS spectra analysis have been performed accounting for the reduction of the coordination number and degeneracy of three-body configurations, resulting from transmission electron microscopy (TEM) and x-ray diffraction (XRD) extracted mean particles diameter, size distribution and expected surface atom contributions. The presence of a Co-Co first neighbour EXAFS signal is shown to be related to the degree of the alloy's chemical disorder.
Authors
- Giorgia Greco,
- dr hab. inż. Agnieszka Witkowska link open in new tab ,
- Y. Soldo,
- E. Larquet,
- N. Menguy,
- A. Cognigni,
- Marco Minicucci,
- Emiliano Principi,
- Andrea Di Cicco
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1088/1742-6596/190/1/012168
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2009
