WO3-TiO2 mixed oxides were synthesized by a sol-gel method employing an inorganic salt (Na2WO4 ∙ 2H2O) and an organic alkoxide (W(OC2H5)6), as tungsten precursors. Different results in terms of photoactivity in both formic acid mineralization in aqueous suspension and acetaldehyde oxidation in the gas phase were obtained, proving that the organic precursor may lead to the formation of an intimately mixed oxide with enhanced photoactivity in both reactions, also higher than that of pure TiO2 and of P25 TiO2.
WO3-TiO2: effect of the W precursor on the photocatalytic activity of mixed oxides / F. Riboni, E. Selli - In: 7th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications / [a cura di] A. Silva, C. Gomes Silva, J.L. Faria, R. Segundo, V.J.P. Vilar. - Porto (Portugal) : Sociedade Portuguesa de Química, 2012 Jun. - ISBN 978-989-97667-4-7. - pp. 363-364 (( Intervento presentato al 7. convegno European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications tenutosi a Porto (Portugal) nel 2012.
WO3-TiO2: effect of the W precursor on the photocatalytic activity of mixed oxides
F. RiboniPrimo
;E. SelliUltimo
2012
Abstract
WO3-TiO2 mixed oxides were synthesized by a sol-gel method employing an inorganic salt (Na2WO4 ∙ 2H2O) and an organic alkoxide (W(OC2H5)6), as tungsten precursors. Different results in terms of photoactivity in both formic acid mineralization in aqueous suspension and acetaldehyde oxidation in the gas phase were obtained, proving that the organic precursor may lead to the formation of an intimately mixed oxide with enhanced photoactivity in both reactions, also higher than that of pure TiO2 and of P25 TiO2.
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