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Peroxymonosulfate (PMS) activation on cobalt-doped TiO₂ nanotubes: degradation of organics under dark and solar light irradiation conditions

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.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1039/d0en00131gDOIArticle
http://www.rsc.org/suppdata/d0/en/d0en00131g/d0en00131g1.pdfPublisherSupporting Information
ORCID:
AuthorORCID
Lim, Jonghun0000-0002-2943-1846
Hoffmann, Michael R.0000-0001-6495-1946
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.
Funders:
Funding AgencyGrant Number
National Research Foundation of KoreaNRF-2019R1I1A1A01057314
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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