Activation of Peroxymonosulfate by Benzoquinone: A Novel Nonradical Oxidation Process
Harbin Institute of Technology · Harbin University of Science and Technology
Abstract
The reactions between peroxymonosulfate (PMS) and quinones were investigated for the first time in this work, where benzoquinone (BQ) was selected as a model quinone. It was demonstrated that BQ could efficiently activate PMS for the degradation of sulfamethoxazole (SMX; a frequently detected antibiotic in the environments), and the degradation rate increased with solution pH from 7 to 10. Interestingly, quenching studies suggested that neither hydroxyl radical (•OH) nor sulfate radical (SO4•-) was produced therein. Instead, the generation of singlet oxygen (1O2) was proved by using two chemical probes (i.e., 2,2,6,6-tetramethyl-4-piperidinol and 9,10-diphenylanthracene) with the appearance of 1O2 indicative…
Citation impact
- FWCI
- 35.84
- Percentile
- 100%
- References
- 68
Authors
8Topics & keywords
- Chemistry
- Singlet oxygen
- Photochemistry
- Benzoquinone
- Decomposition
- Radical
- Quenching (fluorescence)
- Electrophile
- Clean water and sanitation
Funding
- NNNational Natural Science Foundation of ChinaAwards: 51178134, 51378141
- MOMinistry of Education of the People's Republic of ChinaAward: AUGA5710056314
- MOMinistry of Science and Technology of the People's Republic of ChinaAward: 2012BAC05B02
- FFFoundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of ChinaAward: 201346