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Nanoparticles TiO2-photocatalyzed oxidation of selected cyclohexyl alcohols

Paper ID Volume ID Publish Year Pages File Format Full-Text
28988 44112 2008 7 PDF Available
Title
Nanoparticles TiO2-photocatalyzed oxidation of selected cyclohexyl alcohols
Abstract

The present article embraces the photocatalytic oxidation (PCO) of three selected cyclohexyl alcohols namely cyclohexylmethanol (1), 2-cyclohexylethanol (2) and 1-cyclohexylethanol (3) using nanoparticles titanium dioxide (TiO2-P25) as a semiconductor photocatalyst in acetonitrile under aerated conditions. The photocatalytic experiments showed moderate conversion ratios (55.2%, 51.8% and 60.3%, respectively). The primary photocatalytic oxidation products are the corresponding aldehydes or ketones and acids. The photocatalytic oxidation products were identified mainly by GC and GC/MS techniques using authentic samples. Formation of electron–hole pair at the surface of the semiconductor nanoparticles followed by oxidation reaction was the suggested mechanism. A first-order kinetic model was observed for the photocatalytic oxidation of the investigated alcohols and the rate constants were calculated.

Keywords
Photocatalytic oxidation; Photocatalysis; TiO2 nanoparticles; Cyclohexyl alcohols; Kinetics
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Nanoparticles TiO2-photocatalyzed oxidation of selected cyclohexyl alcohols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 200, Issues 2–3, 15 December 2008, Pages 209–215
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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