Urchin-like CO2-responsive magnetic microspheres for highly efficient organic dye removal
Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved..
CO2-responsive materials have emerged as promising adsorbents for the remediation of refractory organic dyes-contaminated wastewater without the formation of byproducts or causing secondary pollution. However, realizing the simultaneous adsorption-separation or complete removal of both anionic and cationic dyes, as well as achieving deeper insights into their adsorption mechanism, still remains a challenge for most reported CO2-responsive materials. Herein, a novel type of urchin-like CO2-responsive Fe3O4 microspheres (U-Fe3O4 P) has been successfully fabricated to enable ultrafast, selective, and reversible adsorption of anionic dyes by utilizing CO2 as a triggering gas. Meanwhile, the CO2-responsive U-Fe3O4 @P microspheres exhibit the capability to initiate Fenton degradation of non-adsorbable cationic dyes. Our findings reveal exceptionally rapid adsorption equilibrium, achieved within a mere 5 min, and an outstanding maximum adsorption capacity of 561.2 mg g-1 for anionic dye methyl orange upon CO2 stimulation. Moreover, 99.8% of cationic dye methylene blue can be effectively degraded through the Fenton reaction. Furthermore, the long-term unresolved interaction mechanism of organic dyes with CO2-responsive materials is deciphered through a comprehensive experimental and theoretical study by density functional theory. This work provides a novel paradigm and guidance for designing next-generation eco-friendly CO2-responsive materials for highly efficient purification of complex dye-contaminated wastewater in environmental engineering.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:469 |
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| Enthalten in: |
Journal of hazardous materials - 469(2024) vom: 05. Apr., Seite 134101 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yang, Lin [VerfasserIn] |
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| Links: |
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| Themen: |
CO(2)-responsiveness |
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| Anmerkungen: |
Date Revised 06.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jhazmat.2024.134101 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved. | ||
| 520 | |a CO2-responsive materials have emerged as promising adsorbents for the remediation of refractory organic dyes-contaminated wastewater without the formation of byproducts or causing secondary pollution. However, realizing the simultaneous adsorption-separation or complete removal of both anionic and cationic dyes, as well as achieving deeper insights into their adsorption mechanism, still remains a challenge for most reported CO2-responsive materials. Herein, a novel type of urchin-like CO2-responsive Fe3O4 microspheres (U-Fe3O4 P) has been successfully fabricated to enable ultrafast, selective, and reversible adsorption of anionic dyes by utilizing CO2 as a triggering gas. Meanwhile, the CO2-responsive U-Fe3O4 @P microspheres exhibit the capability to initiate Fenton degradation of non-adsorbable cationic dyes. Our findings reveal exceptionally rapid adsorption equilibrium, achieved within a mere 5 min, and an outstanding maximum adsorption capacity of 561.2 mg g-1 for anionic dye methyl orange upon CO2 stimulation. Moreover, 99.8% of cationic dye methylene blue can be effectively degraded through the Fenton reaction. Furthermore, the long-term unresolved interaction mechanism of organic dyes with CO2-responsive materials is deciphered through a comprehensive experimental and theoretical study by density functional theory. This work provides a novel paradigm and guidance for designing next-generation eco-friendly CO2-responsive materials for highly efficient purification of complex dye-contaminated wastewater in environmental engineering | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a CO(2)-responsiveness | |
| 650 | 4 | |a Density functional theory | |
| 650 | 4 | |a Dye removal | |
| 650 | 4 | |a Magnetic Fe(3)O(4) microspheres | |
| 650 | 4 | |a Urchin-like structure | |
| 700 | 1 | |a Sun, Yongxiang |e verfasserin |4 aut | |
| 700 | 1 | |a Yu, Ruiquan |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Pan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Qi |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Haoyu |e verfasserin |4 aut | |
| 700 | 1 | |a Lin, Shaojian |e verfasserin |4 aut | |
| 700 | 1 | |a Zeng, Hongbo |e verfasserin |4 aut | |
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