CO oxidation on cationic gold clusters: A theoretical study

Antonio Prestianni, Antonino Martorana, Frédéric Labat, Ilaria Ciofini, Carlo Adamo

Risultato della ricerca: Articlepeer review

37 Citazioni (Scopus)

Abstract

Aiming at understanding the elementary steps governing the oxidation of CO catalyzed by dispersed or supported gold nanoclusters, the reactivity of molecular species, such as O2 and CO, on neutral and positively charged Au13 clusters have been studied using a DFT approach. Two CO oxidation mechanisms have been simulated, involving respectively the adsorption of CO and O2 on adjacent catalytic sites (two-sites mechanism) and the competitive interaction of the reactants on the same site (single-site mechanism). It is demonstrated that in the former scheme a definite interaction of CO and O2 with both the charged and neutral cluster is effective, but that a chemical reaction between the adsorbates does not take place. Only the latter mechanism on positively charged Au13 cluster can give rise to the rupture of dioxygen and carbon dioxide formation. Detailed reaction paths corresponding to this case are calculated.
Lingua originaleEnglish
Numero di pagine6
RivistaJOURNAL OF PHYSICAL CHEMISTRY. C
Volume112
Stato di pubblicazionePublished - 2008

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

Fingerprint Entra nei temi di ricerca di 'CO oxidation on cationic gold clusters: A theoretical study'. Insieme formano una fingerprint unica.

Cita questo