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Heterogeneous photocatalytic degradation of ethylene glycol and propylene glycol

Kim, Kyung Nam and Hoffmann, Michael R. (2008) Heterogeneous photocatalytic degradation of ethylene glycol and propylene glycol. Korean Journal of Chemical Engineering, 25 (1). pp. 89-94. ISSN 0256-1115. https://resolver.caltech.edu/CaltechAUTHORS:20150806-141030325

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Abstract

The photocatalytic decomposition of ethylene glycol and propylene glycol was investigated by using UV-illuminated TiO_2 and metal-loaded TiO_2 catalysts. The effects of pH, initial concentration, and wavelength of light on the decomposition rate of the glycols were explored. Platinum-and palladium-loaded TiO_2 catalysts enhanced the rates of photodecomposition compared to unloaded TiO_2. The glycols were oxidized primarily to carbon dioxide and water. Formaldehyde was found to be an important reaction intermediate. A detailed chemical reaction mechanism for the destruction of ethylene glycol and propylene glycol in water via free radical pathway and trapped hole reactions at the particle surface is proposed.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/s11814-008-0015-4DOIArticle
https://rdcu.be/bPHkKPublisherFree ReadCube access
ORCID:
AuthorORCID
Hoffmann, Michael R.0000-0001-6495-1946
Additional Information:© 2008 Springer. Received 7 April 2007, accepted 13 June 2007.
Subject Keywords:Ethylene Glycol, Metal Loaded Photocatalyst, Oxidation, Photocatalysis, Photocatalytic Activity, Propylene Glycol, TiO2
Issue or Number:1
Record Number:CaltechAUTHORS:20150806-141030325
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150806-141030325
Official Citation:Kim, K.N. & Hoffmann, M.R. Korean J. Chem. Eng. (2008) 25: 89. https://doi.org/10.1007/s11814-008-0015-4
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59267
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:07 Aug 2015 19:13
Last Modified:03 Mar 2020 13:01

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