Ultrafast degradation of contaminants in a trace cobalt(II) activated peroxymonosulfate process triggered through borate : Indispensable role of intermediate complex
Copyright © 2021 Elsevier B.V. All rights reserved..
Among all homogeneous catalysts, cobalt ions show the highest catalytic performance for the activation of peroxymonosulfate (PMS). Herein, we report a Co2+/PMS/H3BO3 system that can effectively generate reactive oxygen species (ROS) with ultra-low Co2+ dosage (5 μg/L). Co2+/PMS/H3BO3 system showed ultrafast reactivity and wide applicability for various pollutants. Sulfamethoxazole (SMX, 2 mg/L) could be completely removed within 5 min, and the corresponding kobs reached up to 1.1239 min-1. The introduction of H3BO3 significantly promoted the generation of ROS. The turnover frequency (TOF) calculated through dividing kobs by the cobalt ions concentration is as high as 224.78 min-1, which is much higher than most of the current research. Through a series of theoretical and experimental analyses, the complex of H2BO3--MS (HSO5B(OH)3-) was inferred to be the key substance that led to the excellent performance of the system. This work provides new insights into the Co2+/PMS system in the presence of borate buffer.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:424 |
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| Enthalten in: |
Journal of hazardous materials - 424(2022), Pt D vom: 15. Feb., Seite 127641 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Huang, Bingkun [VerfasserIn] |
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| Links: |
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| Anmerkungen: |
Date Completed 26.01.2022 Date Revised 26.01.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jhazmat.2021.127641 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM332806650 |
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| 100 | 1 | |a Huang, Bingkun |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Ultrafast degradation of contaminants in a trace cobalt(II) activated peroxymonosulfate process triggered through borate |b Indispensable role of intermediate complex |
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| 500 | |a Date Revised 26.01.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2021 Elsevier B.V. All rights reserved. | ||
| 520 | |a Among all homogeneous catalysts, cobalt ions show the highest catalytic performance for the activation of peroxymonosulfate (PMS). Herein, we report a Co2+/PMS/H3BO3 system that can effectively generate reactive oxygen species (ROS) with ultra-low Co2+ dosage (5 μg/L). Co2+/PMS/H3BO3 system showed ultrafast reactivity and wide applicability for various pollutants. Sulfamethoxazole (SMX, 2 mg/L) could be completely removed within 5 min, and the corresponding kobs reached up to 1.1239 min-1. The introduction of H3BO3 significantly promoted the generation of ROS. The turnover frequency (TOF) calculated through dividing kobs by the cobalt ions concentration is as high as 224.78 min-1, which is much higher than most of the current research. Through a series of theoretical and experimental analyses, the complex of H2BO3--MS (HSO5B(OH)3-) was inferred to be the key substance that led to the excellent performance of the system. This work provides new insights into the Co2+/PMS system in the presence of borate buffer | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a Activation mechanisms | |
| 650 | 4 | |a Borate buffer | |
| 650 | 4 | |a Peroxymonosulfate | |
| 650 | 4 | |a Reactive oxygen species | |
| 650 | 4 | |a Trace cobalt(II) | |
| 650 | 7 | |a Borates |2 NLM | |
| 650 | 7 | |a Peroxides |2 NLM | |
| 650 | 7 | |a peroxymonosulfate |2 NLM | |
| 650 | 7 | |a 22047-43-4 |2 NLM | |
| 650 | 7 | |a Cobalt |2 NLM | |
| 650 | 7 | |a 3G0H8C9362 |2 NLM | |
| 650 | 7 | |a Sulfamethoxazole |2 NLM | |
| 650 | 7 | |a JE42381TNV |2 NLM | |
| 700 | 1 | |a Xiong, Zhaokun |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Peng |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Heng |e verfasserin |4 aut | |
| 700 | 1 | |a Pan, Zhicheng |e verfasserin |4 aut | |
| 700 | 1 | |a Yao, Gang |e verfasserin |4 aut | |
| 700 | 1 | |a Lai, Bo |e verfasserin |4 aut | |
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