TiO2/hydrophobic Cellulose Aerogel Nanocomposite as a New Photocatalyst for Oxidation of Alcohols and Ethylbenzene

Synthesis of new natural polymers-based nanocomposites is the center of attentions for the catalyst researchers on account of their sustainability. In this regard, cellulose aerogel was hydrophobized by polysilicon to give a hydrophobic bio-support which underwent deposition of TiO2 nanoparticles afforded a catalyst with high lipophilicity, superior porosity as well as high catalytic activity. The prepared nanocomposite was structurally characterized, in which the deposition of polysilicon and TiO2 nanoparticles on an aerogel compound was recognized. The aerogel exhibited good hydrophobicity, and high selectivity in oil/water absorption with 6.3 g oil absorbed by 1 g of the absorbent. Finally, the nanocomposite was employed as a heterogeneous photocatalyst in the transformation of alcohols to aldehydes/ketones, and ethylbenzene to acetophenone with the conversions laying in the range of 81-99%. Mild conditions, high yields, excellent selectivities, and recyclability and biocompatibility of the catalyst are advantages of the reactions.