Visible Light Induced Oxidation of Ferulic Acid by TiO2 Photocatalysis

6533b858fe1ef96bd12b6078

RESEARCH PRODUCT

Visible Light Induced Oxidation of Ferulic Acid by TiO2 Photocatalysis

Francesco Parrino G Camera Roda Vincenzo Augugliaro Vittorio Loddo Giovanni Palmisano Leonardo Palmisano Maria Angela Puma

subject

Settore ING-IND/24 - Principi Di Ingegneria Chimica Photocatalysi Charge transfer Vanillin Ferulic acid TiO2 charge transfer complex Settore CHIM/07 - Fondamenti Chimici Delle Tecnologie Visible light

description

Oxidation of ferulic acid (C10H10O4) in aqueous medium occurs by using both commercial and home prepared TiO2 samples under visible light irradiation. Among the oxidation products vanillin was found with a selectivity ranging from 1 to 2% with respect to the converted substrate. By considering that TiO2 is unable to absorb visible light and ferulic acid does not react in the absence of TiO2, the observed photoactivity may be explained by the formation of a charge-transfer complex between ferulic acid and TiO2, being the complex able to absorb visible light. Among all the tested semiconductor oxides, only Merck anatase TiO2 does not perform the oxidation of ferulic acid under visible light irradiation while it is active under near-UV irradiation. Diffuse reflectance spectra of Merck samples impregnated with ferulic acid do not show any evidence of complex formation.

year	journal	country	edition	language
2012-01-01

http://hdl.handle.net/11585/144534

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