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TiO2-mediated photocatalytic debromination of decabromodiphenyl ether: kinetics and intermediates.
- Source :
-
Environmental science & technology [Environ Sci Technol] 2009 Jan 01; Vol. 43 (1), pp. 157-62. - Publication Year :
- 2009
-
Abstract
- In this work, we report the rapid photoreductive debromination of decabromodiphenyl ether (BDE209) byTiO2. The degradation of BDE209 is a stepwise process, and the bromines at the ortho positions are much more susceptible than those at the para positions. The photocatalytic degradation kinetics of BDE209 was further investigated under different reaction conditions (various solvents, in the presence of H2O, acids, or bases). A possible photoreductive debromination pathway was proposed on the basis of the identified reaction intermediates and density functional theory (DFT). This study provides a potential application of photocatalysis in removal of PBDE contamination.
- Subjects :
- Adsorption radiation effects
Catalysis radiation effects
Gas Chromatography-Mass Spectrometry
Halogenated Diphenyl Ethers radiation effects
Kinetics
Models, Chemical
Solvents
Time Factors
Ultraviolet Rays
Halogenated Diphenyl Ethers chemistry
Halogenation radiation effects
Photochemical Processes radiation effects
Titanium chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 0013-936X
- Volume :
- 43
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Environmental science & technology
- Publication Type :
- Academic Journal
- Accession number :
- 19209600
- Full Text :
- https://doi.org/10.1021/es801929a