Ceria nanoparticles (NPs) are fundamental in heterogeneous catalysis because of their ability to store or release oxygen depending on the ambient conditions. Their oxygen storage capacity is strictly related to the exposed planes, crystallinity, density and distribution of defects. In this work a study of ceria NPs produced with a ligand-free, physical synthesis method is presented. The NP films were grown by a magnetron sputtering based gas aggregation source and studied by high resolution- and scanning-transmission electron microscopy and x-ray photoelectron spectroscopy. In particular, the influence of the oxidation procedure on the NP reducibility has been investigated. The different reducibility has been correlated to the exposed planes, crystallinity and density and distribution of structural defects. The results obtained in this work represent a basis to obtain cerium oxide NP with desired oxygen transport properties.

Influence of defect distribution on the reducibility of CeO2-x nanoparticles / Spadaro, Maria Chiara; Luches, Paola; Bertoni, Giovanni; Grillo, Vincenzo; Turner, Stuart; Van Tendeloo, Gustaaf; Valeri, Sergio; D'Addato, Sergio. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - 27:42(2016), pp. 425705-425705. [10.1088/0957-4484/27/42/425705]

Influence of defect distribution on the reducibility of CeO2-x nanoparticles

SPADARO, MARIA CHIARA;VALERI, Sergio;D'ADDATO, Sergio
2016-01-01

Abstract

Ceria nanoparticles (NPs) are fundamental in heterogeneous catalysis because of their ability to store or release oxygen depending on the ambient conditions. Their oxygen storage capacity is strictly related to the exposed planes, crystallinity, density and distribution of defects. In this work a study of ceria NPs produced with a ligand-free, physical synthesis method is presented. The NP films were grown by a magnetron sputtering based gas aggregation source and studied by high resolution- and scanning-transmission electron microscopy and x-ray photoelectron spectroscopy. In particular, the influence of the oxidation procedure on the NP reducibility has been investigated. The different reducibility has been correlated to the exposed planes, crystallinity and density and distribution of structural defects. The results obtained in this work represent a basis to obtain cerium oxide NP with desired oxygen transport properties.
15-set-2016
27
42
425705
425705
Influence of defect distribution on the reducibility of CeO2-x nanoparticles / Spadaro, Maria Chiara; Luches, Paola; Bertoni, Giovanni; Grillo, Vincenzo; Turner, Stuart; Van Tendeloo, Gustaaf; Valeri, Sergio; D'Addato, Sergio. - In: NANOTECHNOLOGY. - ISSN 0957-4484. - 27:42(2016), pp. 425705-425705. [10.1088/0957-4484/27/42/425705]
Spadaro, Maria Chiara; Luches, Paola; Bertoni, Giovanni; Grillo, Vincenzo; Turner, Stuart; Van Tendeloo, Gustaaf; Valeri, Sergio; D'Addato, Sergio
File in questo prodotto:
File Dimensione Formato  
CeO2NPmsfinalIOPresub_CPGS.pdf

Open Access dal 16/09/2017

Tipologia: Versione dell'autore revisionata e accettata per la pubblicazione
Dimensione 3.34 MB
Formato Adobe PDF
3.34 MB Adobe PDF Visualizza/Apri
VOR_Influence of defect distribution on the reducibility.pdf

Accesso riservato

Tipologia: Versione pubblicata dall'editore
Dimensione 2.12 MB
Formato Adobe PDF
2.12 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1131631
Citazioni
  • ???jsp.display-item.citation.pmc??? 3
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 15
social impact