Mechanism of peroxymonosulfate activation by nanoparticle CoN-C : Experimental investigation and theoretical calculation
Copyright © 2024 Elsevier Ltd. All rights reserved..
The release of organic dyes, such as Rhodamine B (RhB), into industrial wastewater has led to significant issues with color pollution in aquatic environments. Herein, we prepared a cobalt nanoparticles (NPs)-based catalyst with the nitrogen-doped carbon-support (CoN-C) for effective PMS activation. The Co@N-C/PMS system demonstrated the excellent catalytic activity of Co@N-C for activating PMS, achieving nearly 100% degradation of RhB. Singlet oxygen (1O2) and sulfate radicals (SO4•-) were dominant reactive oxygen species for RhB degradation. Density functional theory (DFT) calculations substantiated that the production of 1O2 commenced with the initial generation of *OH through hydrogen abstraction from PMS, culminating in the direct release of oxygen to form 1O2 (PMS→*OH→O*→1O2). The generation of SO4•- was attributed to electron transfer to PMS from the surface of Co NPs (Co0→Co2+→Co3+) and the C-N shell (Co2+→Co3+). The research findings provided new insights into the development of Co-based heterogeneous catalysis for advanced oxidation of refractory organic pollutants in wastewater treatment.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:354 |
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| Enthalten in: |
Chemosphere - 354(2024) vom: 15. Apr., Seite 141720 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Li, Mu [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 08.04.2024 Date Revised 08.04.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.chemosphere.2024.141720 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Copyright © 2024 Elsevier Ltd. All rights reserved. | ||
| 520 | |a The release of organic dyes, such as Rhodamine B (RhB), into industrial wastewater has led to significant issues with color pollution in aquatic environments. Herein, we prepared a cobalt nanoparticles (NPs)-based catalyst with the nitrogen-doped carbon-support (CoN-C) for effective PMS activation. The Co@N-C/PMS system demonstrated the excellent catalytic activity of Co@N-C for activating PMS, achieving nearly 100% degradation of RhB. Singlet oxygen (1O2) and sulfate radicals (SO4•-) were dominant reactive oxygen species for RhB degradation. Density functional theory (DFT) calculations substantiated that the production of 1O2 commenced with the initial generation of *OH through hydrogen abstraction from PMS, culminating in the direct release of oxygen to form 1O2 (PMS→*OH→O*→1O2). The generation of SO4•- was attributed to electron transfer to PMS from the surface of Co NPs (Co0→Co2+→Co3+) and the C-N shell (Co2+→Co3+). The research findings provided new insights into the development of Co-based heterogeneous catalysis for advanced oxidation of refractory organic pollutants in wastewater treatment | ||
| 650 | 4 | |a Letter | |
| 650 | 4 | |a Advanced oxidation process (AOP) | |
| 650 | 4 | |a Cobalt nanoparticles (Co NPs) | |
| 650 | 4 | |a Density functional theory (DFT) | |
| 650 | 4 | |a Peroxymonosulfate (PMS) | |
| 650 | 7 | |a peroxymonosulfate |2 NLM | |
| 650 | 7 | |a 22047-43-4 |2 NLM | |
| 650 | 7 | |a Peroxides |2 NLM | |
| 650 | 7 | |a Reactive Oxygen Species |2 NLM | |
| 650 | 7 | |a Carbon |2 NLM | |
| 650 | 7 | |a 7440-44-0 |2 NLM | |
| 650 | 7 | |a Oxygen |2 NLM | |
| 650 | 7 | |a S88TT14065 |2 NLM | |
| 700 | 1 | |a Lin, Lin |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Wei |e verfasserin |4 aut | |
| 700 | 1 | |a Zou, Yubin |e verfasserin |4 aut | |
| 700 | 1 | |a Hu, Jiahui |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Yin |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Bing |e verfasserin |4 aut | |
| 700 | 1 | |a Sun, Feiyun |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Xiao-Yan |e verfasserin |4 aut | |
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