期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 183, 期 -, 页码 107-112出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2015.10.034
关键词
Selective photo-oxidation; Ultrasound-assisted impregnation; TiO2; Aromatic alcohols; Magnetic photocatalysts
资金
- Spanish MICINN [RYC-2009-04199]
- MEC [CTQ2011-28954-C02-02]
- Consejeria de Ciencia e Innovacion, Junta de Andalucia [P10-FQM-6711]
A simple and effective ultrasound-assisted wet impregnation method was developed for the preparation of magnetically separable TiO2/maghemite-silica photo-active nanocomposites. The resulting nanomaterials were characterized by several techniques and subsequently tested for their photocatalytic activities in the liquid phase selective oxidation of benzyl alcohol. An unprecedented selectivity in organic media (90% in acetonitrile) towards benzaldehyde was achieved at a benzyl alcohol conversion of ca. 50%, being remarkably superior in terms of activity to any other supported transition metal catalysts reported to date as well as commercial titania Evonik P-25 photocatalyst. (C) 2015 Elsevier B.V. All rights reserved.
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