Design of bifunctional ultrathin MnO2 nanofilm with laccase-like activity for sensing environmental pollutants containing phenol groups
Copyright © 2023 Elsevier B.V. All rights reserved..
Laccase-catalyzed oxidative reactions are increasingly examined as a reliable approach to environmental analysis and remediation, and it is urgent to widen metal category to compensate huge gap in the number of studies on copper- and non-copper laccase mimics. Herein, two-dimensional ultrathin MnO2 nanofilm (Mn-uNF) was designed via a chemical deposition and alkali etching process. Similar to Cu-laccase, Mn-uNF can oxidize phenols via a one-electron-transfer reaction of Mn(III) and accelerate the MnIII/MnIV state cycle through an unconventional oxygen reduction process. The excellent laccase-like performance of Mn-uNF can be ascribed to the abundant atomically dispersed Vo-assisted Mn(III) and surface -OH species, which was confirmed by characterizations and DFT calculation. Further, a facile dual-function colorimetric platform was designed for array sensing of o-, m-, and p-dihydroxybenzene isomers and one-step discrimination of tetracyclines containing phenol groups. These findings provide reasonable guidance for the design of a nanozyme with active Mn sites as a new family member of highly efficient copper-free laccase mimics.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 2023 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:461 |
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| Enthalten in: |
Journal of hazardous materials - 461(2023) vom: 05. Jan., Seite 132493 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wu, Sheng-Tao [VerfasserIn] |
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| Links: |
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| Themen: |
2D Materials |
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| Anmerkungen: |
Date Revised 20.10.2023 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jhazmat.2023.132493 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM362133565 |
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| 245 | 1 | 0 | |a Design of bifunctional ultrathin MnO2 nanofilm with laccase-like activity for sensing environmental pollutants containing phenol groups |
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| 500 | |a Date Revised 20.10.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2023 Elsevier B.V. All rights reserved. | ||
| 520 | |a Laccase-catalyzed oxidative reactions are increasingly examined as a reliable approach to environmental analysis and remediation, and it is urgent to widen metal category to compensate huge gap in the number of studies on copper- and non-copper laccase mimics. Herein, two-dimensional ultrathin MnO2 nanofilm (Mn-uNF) was designed via a chemical deposition and alkali etching process. Similar to Cu-laccase, Mn-uNF can oxidize phenols via a one-electron-transfer reaction of Mn(III) and accelerate the MnIII/MnIV state cycle through an unconventional oxygen reduction process. The excellent laccase-like performance of Mn-uNF can be ascribed to the abundant atomically dispersed Vo-assisted Mn(III) and surface -OH species, which was confirmed by characterizations and DFT calculation. Further, a facile dual-function colorimetric platform was designed for array sensing of o-, m-, and p-dihydroxybenzene isomers and one-step discrimination of tetracyclines containing phenol groups. These findings provide reasonable guidance for the design of a nanozyme with active Mn sites as a new family member of highly efficient copper-free laccase mimics | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a 2D Materials | |
| 650 | 4 | |a Dual-function Colorimetry | |
| 650 | 4 | |a Laccase Mimics | |
| 650 | 4 | |a Manganese Oxide | |
| 650 | 4 | |a Sensor array | |
| 700 | 1 | |a Su, Hui-Qi |e verfasserin |4 aut | |
| 700 | 1 | |a Xiao, Qian-Xiang |e verfasserin |4 aut | |
| 700 | 1 | |a Qiu, Zhi-Yu |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Gang-Qiang |e verfasserin |4 aut | |
| 700 | 1 | |a He, Man-Ni |e verfasserin |4 aut | |
| 700 | 1 | |a Ge, Yi |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Cong-Hui |e verfasserin |4 aut | |
| 700 | 1 | |a Lin, Ying-Wu |e verfasserin |4 aut | |
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