苯甲醛
硝基苯
苯甲醇
苯胺
光催化
无定形固体
化学
选择性
酒
溶剂
光化学
有机化学
无机化学
催化作用
作者
Bruno César Barroso Salgado,Antoninho Valentini
标识
DOI:10.1590/0001-3765202320220105
摘要
Selective photocatalytic oxidation of benzyl alcohol to benzaldehyde and reduction of nitrobenzene to aniline reactions are investigated by using SiO2@TiO2 spheres produced in a simple route using chitosan as a template. The spheres are predominantly macroporous and, the XRD points out an amorphous crystallographic profile suggesting the uniform distribution of TiO2. Under low-power lighting for 4 hours, the conversions achieved was of the order of 49% and 99% for benzyl alcohol and nitrobenzene, respectively, with selectivity to benzaldehyde and aniline of 99% in both reactions. The study also follows the effects of the solvent and the presence of O2.
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