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

作者：Ouyang Weiyi; Reina Jose M; Kuna Ewelina; Yepez Alfonso; Balu Alina M; Romero Antonio A; Colmenares Juan Carlos; Luque Rafael^*

来源：Journal of Environmental Management, 2017, 203: 768-773.

DOI：10.1016/j.jenvman.2016.07.013

• Waste valorization
• Wheat bran
• Photocatalysis
• Benzyl alcohol oxidation

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 UV Vis 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.

• 出版日期2017-12-1