Au nanoparticles supported on CeO2 have been prepared and investigated as photocatalysts for the photocatalytic selective oxidation of benzyl alcohol and 4-methoxybenzyl alcohol to the correspondent benzaldehydes, in aqueous suspensions and room conditions under UV, visible and natural solar light irradiation. Au nanoparticles have been supported by impregnation (1 and 3 wt.%) on two types of CeO2 (i.e., a commercial one and a home prepared oxide obtained in the presence of NaOH as precipitation agent). The Au impregnated samples showed strong visible radiation absorption at 565–570 nm associated to localized surface plasmon resonance (LSPR). The bare CeO2 samples are activated by UV light and resulted virtually inactive under visible irradiation, whereas the presence of Au improved both the conversion of the alcohols and the selectivity of the reaction towards the aldehyde, giving rise to good results, particularly under visible and natural solar light irradiation. The activity of the materials increased by increasing the Au content.

Au/ceo2 photocatalyst for the selective oxidation of aromatic alcohols in water under uv, visible and solar irradiation / Garcia-Lopez, Elisa; Abbasi, Zahra; Parrino, Francesco; La Parola, Valeria; Liotta, Leonarda F.; Marci, Giuseppe. - In: CATALYSTS. - ISSN 2073-4344. - 11:12(2021), pp. 1467.1-1467.21. [10.3390/catal11121467]

Au/ceo2 photocatalyst for the selective oxidation of aromatic alcohols in water under uv, visible and solar irradiation

Parrino, Francesco;
2021-01-01

Abstract

Au nanoparticles supported on CeO2 have been prepared and investigated as photocatalysts for the photocatalytic selective oxidation of benzyl alcohol and 4-methoxybenzyl alcohol to the correspondent benzaldehydes, in aqueous suspensions and room conditions under UV, visible and natural solar light irradiation. Au nanoparticles have been supported by impregnation (1 and 3 wt.%) on two types of CeO2 (i.e., a commercial one and a home prepared oxide obtained in the presence of NaOH as precipitation agent). The Au impregnated samples showed strong visible radiation absorption at 565–570 nm associated to localized surface plasmon resonance (LSPR). The bare CeO2 samples are activated by UV light and resulted virtually inactive under visible irradiation, whereas the presence of Au improved both the conversion of the alcohols and the selectivity of the reaction towards the aldehyde, giving rise to good results, particularly under visible and natural solar light irradiation. The activity of the materials increased by increasing the Au content.
2021
12
Garcia-Lopez, Elisa; Abbasi, Zahra; Parrino, Francesco; La Parola, Valeria; Liotta, Leonarda F.; Marci, Giuseppe
Au/ceo2 photocatalyst for the selective oxidation of aromatic alcohols in water under uv, visible and solar irradiation / Garcia-Lopez, Elisa; Abbasi, Zahra; Parrino, Francesco; La Parola, Valeria; Liotta, Leonarda F.; Marci, Giuseppe. - In: CATALYSTS. - ISSN 2073-4344. - 11:12(2021), pp. 1467.1-1467.21. [10.3390/catal11121467]
File in questo prodotto:
File Dimensione Formato  
catalysts-2021.pdf

accesso aperto

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Creative commons
Dimensione 7.52 MB
Formato Adobe PDF
7.52 MB Adobe PDF Visualizza/Apri

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/11572/341583
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
  • OpenAlex ND
social impact