Journal
CATALYSIS COMMUNICATIONS
Volume 35, Issue -, Pages 82-87Publisher
ELSEVIER
DOI: 10.1016/j.catcom.2013.02.012
Keywords
Catalytic ozonation; Sulfamethoxazole; MWCNT; Surface chemistry
Categories
Funding
- European Community [280658]
- FCT [BD/45826/2008]
- FEDER through COMPETE
- [PEst-C/EQB/LA0020/2011]
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Multi-walled carbon nanotubes (MWCNTs) with different surface chemical properties were prepared by oxidative and thermal treatments. Samples were characterized by nitrogen adsorption, temperature programmed desorption and pH at the point of zero charge. These catalysts were tested in the ozonation of sulfamethoxazole. Complete conversion of this compound was achieved after approximately 30 min. MWCNTs significantly enhanced the mineralization degree compared to single ozonation. Some oxidation products were quantified. The catalytic process is favored by MWCNTs with basic or neutral properties. Successive experimental runs of SMX degradation show that the catalysts suffer some deactivation. (C) 2013 Elsevier B.V. All rights reserved.
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