Back to Search
Start Over
Nanoparticles TiO2-photocatalyzed oxidation of selected cyclohexyl alcohols
- Source :
-
Journal of Photochemistry & Photobiology A: Chemistry . Dec2008, Vol. 200 Issue 2/3, p209-215. 7p. - Publication Year :
- 2008
-
Abstract
- 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. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 10106030
- Volume :
- 200
- Issue :
- 2/3
- Database :
- Academic Search Index
- Journal :
- Journal of Photochemistry & Photobiology A: Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 35505114
- Full Text :
- https://doi.org/10.1016/j.jphotochem.2008.07.015