Sulfate Radical-Mediated Degradation of Sulfadiazine by CuFeO 2 Rhombohedral Crystal-Catalyzed Peroxymonosulfate: Synergistic Effects and Mechanisms
University of Hong Kong · State Key Laboratory of Pollution Control and Resource Reuse · +1 more institution
Abstract
Copper-iron bimetallic oxides have shown great potential for powerful radical production by activating peroxides. In this work, CuFeO2 rhombohedral crystals (RCs) were synthesized and used as heterogeneous catalysts for peroxymonosulfate (PMS) activation under various conditions. Sulfadiazine, a widely used veterinary sulfonamide, was used as a target pollutant to evaluate the efficiency of this combination. The results showed that of all the catalysts tested, the CuFeO2 RCs had the greatest reactivity. Under conditions of 0.1 g L(-1) CuFeO2 RCs and 33.0 μM PMS, the nearly complete degradation of sulfadiazine occurred within 24 min. A synergistic catalytic effect was found between solid Cu(I) and Fe(III),…
Citation impact
- FWCI
- 44.74
- Percentile
- 100%
- References
- 56
Authors
5Topics & keywords
- Sulfadiazine
- Catalysis
- Radical
- Bimetallic strip
- Chemistry
- Degradation (telecommunications)
- Trigonal crystal system
- Reactivity (psychology)