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Photocatalytic green synthesis of piperonal in aqueous TiO2 suspension

Paper ID Volume ID Publish Year Pages File Format Full-Text
45399 46410 2014 7 PDF Available
Title
Photocatalytic green synthesis of piperonal in aqueous TiO2 suspension
Abstract

•We report the green synthesis of piperonal by the photocatalytic method.•The photocatalytic efficiency of home prepared and commercial TiO2 powders was investigated.•The best selectivity (ca. 35%) was obtained by using the home-prepared samples.

Piperonal (heliotropine or 3,4-methylenedioxybenzaldehyde) has been synthesized by oxidizing piperonyl alcohol in aqueous UV-irradiated TiO2 suspensions. This compound was identified by GC–MS chromatography, 1H NMR and melting point determination. The other products of the photoprocess were 1,3-bis(3,4-(methylenedioxy)benzyl) ether (found in traces) and CO2, derived from the parallel pathway of photo-mineralization. Commercial and home-prepared TiO2 samples have been tested and the best selectivity (ca. 35%) was obtained by using the home-prepared ones. The reported green process allows to obtain an added value product (piperonal), upon partial oxidation of a cheap reagent.

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Keywords
Photocatalysis; Green synthesis; Piperonal; TiO2 suspension
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Photocatalytic green synthesis of piperonal in aqueous TiO2 suspension
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 144, January 2014, Pages 607–613
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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