Lim, Jonghun and Hoffmann, Michael R. (2020) Peroxymonosulfate (PMS) activation on cobalt-doped TiO₂ nanotubes: degradation of organics under dark and solar light irradiation conditions. Environmental Science: Nano, 7 (5). pp. 1602-1611. ISSN 2051-8153. https://resolver.caltech.edu/CaltechAUTHORS:20200423-133924299
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Abstract
Peroxymonosulfate activation on cobalt-doped TiO₂ nanotubes (Co-TNTs) as applied for the degradation of organic pollutants in the absence of light and under solar light irradiation is investigated. Co-TNTs generate SO₄˙⁻ via PMS activation in the dark, while they result in SO₄˙⁻ formation via PMS activation and, at the same time, produce ˙OH via photocatalytic water oxidation under simulated solar light illumination. Radical generation is explored using electron paramagnetic resonance (EPR) spectroscopy. The catalytic activity is maintained over multiple catalytic cycles with negligible Co(II) leaching. The nanotube catalysts are easily recovered without loss of activity after water treatment. The Co-TNT/PMS reaction system can be used for wastewater treatment during the day and at night.
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| Additional Information: | © 2020 The Royal Society of Chemistry. Submitted 04 Feb 2020; Accepted 01 Apr 2020; First published 23 Apr 2020. This research was supported by the Basic Science Research Program (NRF-2019R1I1A1A01057314) funded by the Korea government (MSIP) through the National Research Foundation (NRF). There are no conflicts to declare. | |||||||||
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| Issue or Number: | 5 | |||||||||
| Record Number: | CaltechAUTHORS:20200423-133924299 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20200423-133924299 | |||||||||
| Official Citation: | Peroxymonosulfate (PMS) activation on cobalt-doped TiO₂ nanotubes: degradation of organics under dark and solar light irradiation conditions. Environ. Sci.: Nano, 2020, 7, 1602-1611; doi: 10.1039/d0en00131g | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 102754 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 23 Apr 2020 20:49 | |||||||||
| Last Modified: | 26 May 2020 22:26 |
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