Chemisorption of CO on Au/TiOx/Pt(111) Model Catalysts with Different Stoichiometry and Defectivity (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Chemisorption of CO on Au/TiOx/Pt(111) Model Catalysts with Different Stoichiometry and Defectivity (Articolo in rivista) (literal)

Anno

• 2008-01-01T00:00:00+01:00 (literal)

Alternative label

• Artiglia, L; Rizzi, GA; Sedona, F; Agnoli, S; Granozzi, G (2008)
  Chemisorption of CO on Au/TiOx/Pt(111) Model Catalysts with Different Stoichiometry and Defectivity
  in Journal of nanoscience and nanotechnology (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Artiglia, L; Rizzi, GA; Sedona, F; Agnoli, S; Granozzi, G (literal)

Pagina inizio

• 3595 (literal)

Pagina fine

• 3602 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 8 (literal)

Rivista

• Journal of nanoscience and nanotechnology (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• \"[Granozzi, Gaetano] Univ Padua, Dipartimento Sci Chim, Unita Ric, CNR,INFM, I-35131 Padua, Italy; Univ Padua, INSTM, I-35131 Padua, Italy (literal)

Titolo

• Chemisorption of CO on Au/TiOx/Pt(111) Model Catalysts with Different Stoichiometry and Defectivity (literal)

Abstract

• Au/TiOx/Pt(111) model catalysts were prepared starting from well characterized TiOx/Pt(111) ultrathin films, according to an established procedure consisting in a reactive evaporation of Ti, subsequent thermal treatment in O-2 or in UHV, and final deposition of submonolayer quantities of Au. Temperature Programmed Desorption measurements were performed to compare the interaction of CO in the case of two reduced TiOx/Pt(111) substrates (indicated as w-TiOx and w'-TiOx, being the former characterized by an ordered array of defects that can act as template for the deposition of a stable array of Au nanoparticles), with the case of a stoichiometric rect'-TiO2/Pt(111) substrate. It was found that in all cases CO is molecularly adsorbed and two different desorption peaks are detected: one at approximate to 140 K corresponding to CO desorption from less active adsorption sites (terraces) of the Au nanoparticles and one at approximate to 200 K corresponding to CO desorption from Au nanoparticles step sites. After annealing at 770 K, the high temperature CO desorption peak is still present in the case of the defective reduced w-TiOx phase, supporting the good templating and stabilizing effect of such phase. On the rect'-TiO2 stoichiometric phase, the CO uptake decreases after annealing but only to a minor extent. (literal)

Autore CNR

• GAETANO GRANOZZI (Persona)
• STEFANO AGNOLI (Unità di personale esterno)
• GIAN ANDREA RIZZI (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Chemisorption of CO on Au/TiOx/Pt(111) Model Catalysts with Different Stoichiometry and Defectivity" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• GIAN ANDREA RIZZI (Unità di personale esterno)
• STEFANO AGNOLI (Unità di personale esterno)
• GAETANO GRANOZZI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of nanoscience and nanotechnology (Rivista)

Insieme di parole chiave di

• Keywords of "Chemisorption of CO on Au/TiOx/Pt(111) Model Catalysts with Different Stoichiometry and Defectivity" (Insieme di parole chiave)