کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
45138 46401 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mild ultrasound-assisted synthesis of TiO2 supported on magnetic nanocomposites for selective photo-oxidation of benzyl alcohol
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Mild ultrasound-assisted synthesis of TiO2 supported on magnetic nanocomposites for selective photo-oxidation of benzyl alcohol
چکیده انگلیسی


• Simple synthesis of hybrid photocatalysts containing magnetic nanocomposites and titania.
• Selective and stable composite photocatalyst for liquid phase photocatalytic oxidation of benzyl alcohol.
• Sonication-based preparation of modern selective composite photocatalyst with magnetic properties for simple recovery.
• Advantages of combining magnetic filtration and photocatalysis for green chemistry synthesis.

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.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 183, April 2016, Pages 107–112
نویسندگان
, , , , , , , , ,