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.

Parrino, F., García-López, E., Marcì, G., Palmisano, L., Felice, V., Natali Sora, I., et al. (2016). Cu-substituted lanthanum ferrite perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar light irradiation. JOURNAL OF ALLOYS AND COMPOUNDS, 682, 686-694 [10.1016/j.jallcom.2016.05.017].

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

PARRINO, Francesco;GARCIA LOPEZ, Elisa Isabel;MARCI', Giuseppe
;
PALMISANO, Leonardo;
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.
Settore CHIM/07 - Fondamenti Chimici Delle Tecnologie
Parrino, F., García-López, E., Marcì, G., Palmisano, L., Felice, V., Natali Sora, I., et al. (2016). Cu-substituted lanthanum ferrite perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar light irradiation. JOURNAL OF ALLOYS AND COMPOUNDS, 682, 686-694 [10.1016/j.jallcom.2016.05.017].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/206504
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