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Wheat bran valorisation: Towards photocatalytic nanomaterials for benzyl alcohol photo-oxidation

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Author
Balu, Alina M.
Ouyang, Weiyi
Reina, Jose M.
Kuna, Ewelina
Yépez, Alfonso
Romero, Antonio A.
Colmenares, Juan C.
Luque, Rafael
Publisher
Elsevier
Date
2017
Subject
Waste valorization
Wheat bran
Photocatalysis
Benzyl alcohol oxidation
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Abstract
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.
URI
http://hdl.handle.net/10396/14816
Fuente
Journal of Environmental Management 203, 768-773 (2017)
Versión del Editor
http://dx.doi.org/10.1016/j.jenvman.2016.07.013
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