Ozonation of sulfamethoxazole promoted by MWCNT

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Alexandra Gonçalves (Author) FEUP; José Melo Orfão (Author) FEUP; Manuel Fernando R Pereira (Author) FEUP

Journal

Title: Catalysis Communications

Vol. 35

Pages: 82-87

ISSN: 1566-7367

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 28 Citations

ISI Web of Science

Scopus - 37 Citations

Scientific classification

FOS: Engineering and technology

Other information

Authenticus ID: P-005-0T6

DOI: 10.1016/j.catcom.2013.02.012

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6