Strontium titanate-based perovskites have been prepared in the presence of Y and Co with the aim to substitute Sr and Ti, respectively, in the ST crystalline structure. The obtained samples have been characterized by XRD, Raman spectroscopy, FE-SEM, XPS and tested as photocatalysts in two gas–solid regime reactions: (i) 2-propanol complete mineralization and (ii) propene partial oxidation, using a system simulating solar irradiation. All the tested samples resulted active as photocatalysis but with significant differences. The lattice substitution of Sr by Y displays a beneficial effect on the 2-propanol photodegradation. Conversely, the partial presence of cobalt on the ST surface, as Co-oxide nanodispersed clusters with a dominant Co(II) phase, plays a substantial detrimental effect on the photo-degradation process of 2-propanol, but favours the photocatalytic partial oxidation of propene to propene oxide.

García-López, E., Marcì, G., Megna, B., Parisi, F., Armelao, L., Trovarelli, A., et al. (2015). SrTiO3-based perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar irradiation. JOURNAL OF CATALYSIS, 321, 13-22 [10.1016/j.jcat.2014.10.014].

SrTiO3-based perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar irradiation

GARCIA LOPEZ, Elisa Isabel
;
MARCI', Giuseppe;MEGNA, Bartolomeo;PARISI, Filippo;PALMISANO, Leonardo
2015-01-01

Abstract

Strontium titanate-based perovskites have been prepared in the presence of Y and Co with the aim to substitute Sr and Ti, respectively, in the ST crystalline structure. The obtained samples have been characterized by XRD, Raman spectroscopy, FE-SEM, XPS and tested as photocatalysts in two gas–solid regime reactions: (i) 2-propanol complete mineralization and (ii) propene partial oxidation, using a system simulating solar irradiation. All the tested samples resulted active as photocatalysis but with significant differences. The lattice substitution of Sr by Y displays a beneficial effect on the 2-propanol photodegradation. Conversely, the partial presence of cobalt on the ST surface, as Co-oxide nanodispersed clusters with a dominant Co(II) phase, plays a substantial detrimental effect on the photo-degradation process of 2-propanol, but favours the photocatalytic partial oxidation of propene to propene oxide.
2015
García-López, E., Marcì, G., Megna, B., Parisi, F., Armelao, L., Trovarelli, A., et al. (2015). SrTiO3-based perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar irradiation. JOURNAL OF CATALYSIS, 321, 13-22 [10.1016/j.jcat.2014.10.014].
File in questo prodotto:
File Dimensione Formato  
Garcia-Lopez-J catalysis 321 (2015) 13-22.pdf

Solo gestori archvio

Descrizione: Articolo principale
Tipologia: Versione Editoriale
Dimensione 3.84 MB
Formato Adobe PDF
3.84 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/177052
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 46
  • ???jsp.display-item.citation.isi??? 41
social impact