LaFeO3 perovskites, both bare and containing 5-40 mol% of Cu(II) substituting Fe(III), have been prepared by the citrate autocombustion synthesis method and used as heterogeneous photocatalysts for the degradation of 2-propanol in gas-solid regime under simulated solar light irradiation. Bare LaFeO3 resulted inactive, whereas Cu(II) containing perovskites oxidized 2-propanol to propanone, and eventually to CO2 and H2O. The photocatalytic activity of the Cu containing LaFeO3 perovskites increased by increasing the Cu amount up to 10 mol% and hence slightly decreased for higher copper contents. The samples were fully characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman and diffuse reflectance (DRS) spectroscopies, X-ray photoelectron spectroscopy (XPS) and photocurrent measurements. The photocatalytic activity was correlated with compositional, structural and morphological features.

(2016). Cu-substituted lanthanum ferrite perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar light irradiation [journal article - articolo]. In JOURNAL OF ALLOYS AND COMPOUNDS. Retrieved from http://hdl.handle.net/10446/74511

Cu-substituted lanthanum ferrite perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar light irradiation

Felice, Valeria;Natali Sora, Isabella;
2016-01-01

Abstract

LaFeO3 perovskites, both bare and containing 5-40 mol% of Cu(II) substituting Fe(III), have been prepared by the citrate autocombustion synthesis method and used as heterogeneous photocatalysts for the degradation of 2-propanol in gas-solid regime under simulated solar light irradiation. Bare LaFeO3 resulted inactive, whereas Cu(II) containing perovskites oxidized 2-propanol to propanone, and eventually to CO2 and H2O. The photocatalytic activity of the Cu containing LaFeO3 perovskites increased by increasing the Cu amount up to 10 mol% and hence slightly decreased for higher copper contents. The samples were fully characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman and diffuse reflectance (DRS) spectroscopies, X-ray photoelectron spectroscopy (XPS) and photocurrent measurements. The photocatalytic activity was correlated with compositional, structural and morphological features.
articolo
2016
Parrino, Francesco; García-López, Elisa Isabel; Marcì, Giuseppe; Palmisano, Leonardo; Felice, Valeria; NATALI SORA, Isabella; Armelao, Lidia
(2016). Cu-substituted lanthanum ferrite perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar light irradiation [journal article - articolo]. In JOURNAL OF ALLOYS AND COMPOUNDS. Retrieved from http://hdl.handle.net/10446/74511
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