Wheat bran valorisation: Towards photocatalytic nanomaterials for benzyl alcohol photo-oxidation
Autor
Balu, Alina M.
Ouyang, Weiyi
Reina, Jose M.
Kuna, Ewelina
Yépez, Alfonso
Romero, Antonio A.
Colmenares, Juan C.
Luque, Rafael
Editor
ElsevierFecha
2017Materia
Waste valorizationWheat bran
Photocatalysis
Benzyl alcohol oxidation
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In this work, we have successfully synthesized a set of titania photocatalytic nanocomposites by the
incorporation of different TiO2 content on wheat bran residues. The obtained catalysts were characterized
by different techniques including UVeVis spectroscopy, X-ray diffraction (XRD), X-ray photoelectron
spectroscopy (XPS) and Transmission Electron Microscopy (TEM) while their photocatalytic activity was
investigated in the oxidation of benzyl alcohol under UV light irradiation. Benzaldehyde yields were ca.
20%, with conversion in the systems of ca. 33% of benzyl alcohol by using 10%Ti-Bran catalyst, as
compared to 33% yield to the target product (quantitative conversion of benzyl alcohol) using commercial
pure TiO2 (P-25). The photocatalytic activity results indicate that designed waste-derived
nanomaterials with low TiO2 content can efficiently photocatalyze the conversion of benzyl alcohol
with relative high selectivity towards benzaldehyde.