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Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange
Chitosan (CS) is a natural and low-cost adsorbent for capturing metal ions and organic compounds. However, the high solubility of CS in acidic solution would make it difficult to recycle the adsorbent from the liquid phase. In this study, the CS/Fe(3)O(4) was prepared via Fe(3)O(4) nanoparticles imm...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10005193/ https://www.ncbi.nlm.nih.gov/pubmed/36903554 http://dx.doi.org/10.3390/molecules28052307 |
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author | Teng, Daoguang Jin, Peng Guo, Wenhuan Liu, Jiang Wang, Wei Li, Peng Cao, Yijun Zhang, Ling Zhang, Ying |
author_facet | Teng, Daoguang Jin, Peng Guo, Wenhuan Liu, Jiang Wang, Wei Li, Peng Cao, Yijun Zhang, Ling Zhang, Ying |
author_sort | Teng, Daoguang |
collection | PubMed |
description | Chitosan (CS) is a natural and low-cost adsorbent for capturing metal ions and organic compounds. However, the high solubility of CS in acidic solution would make it difficult to recycle the adsorbent from the liquid phase. In this study, the CS/Fe(3)O(4) was prepared via Fe(3)O(4) nanoparticles immobilized onto a CS surface, and the DCS/Fe(3)O(4)-Cu was further fabricated after surface modification and the adsorption of Cu ions. The meticulously tailored material displayed the sub-micron size of an agglomerated structure with numerous magnetic Fe(3)O(4) nanoparticles. During the adsorption of methyl orange (MO), the DCS/Fe(3)O(4)-Cu delivered a superior removal efficiency of 96.4% at 40 min, which is more than twice the removal efficiency of 38.7% for pristine CS/Fe(3)O(4). At an initial MO concentration of 100 mg L(−1), the DCS/Fe(3)O(4)-Cu exhibited the maximum adsorption capacity of 144.60 mg g(−1). The experimental data were well explained by the pseudo-second-order model and Langmuir isotherm, suggesting the dominant monolayer adsorption. The composite adsorbent still maintained a large removal rate of 93.5% after five regeneration cycles. This work develops an effective strategy to simultaneously achieve high adsorption performance and convenient recyclability for wastewater treatment. |
format | Online Article Text |
id | pubmed-10005193 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100051932023-03-11 Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange Teng, Daoguang Jin, Peng Guo, Wenhuan Liu, Jiang Wang, Wei Li, Peng Cao, Yijun Zhang, Ling Zhang, Ying Molecules Article Chitosan (CS) is a natural and low-cost adsorbent for capturing metal ions and organic compounds. However, the high solubility of CS in acidic solution would make it difficult to recycle the adsorbent from the liquid phase. In this study, the CS/Fe(3)O(4) was prepared via Fe(3)O(4) nanoparticles immobilized onto a CS surface, and the DCS/Fe(3)O(4)-Cu was further fabricated after surface modification and the adsorption of Cu ions. The meticulously tailored material displayed the sub-micron size of an agglomerated structure with numerous magnetic Fe(3)O(4) nanoparticles. During the adsorption of methyl orange (MO), the DCS/Fe(3)O(4)-Cu delivered a superior removal efficiency of 96.4% at 40 min, which is more than twice the removal efficiency of 38.7% for pristine CS/Fe(3)O(4). At an initial MO concentration of 100 mg L(−1), the DCS/Fe(3)O(4)-Cu exhibited the maximum adsorption capacity of 144.60 mg g(−1). The experimental data were well explained by the pseudo-second-order model and Langmuir isotherm, suggesting the dominant monolayer adsorption. The composite adsorbent still maintained a large removal rate of 93.5% after five regeneration cycles. This work develops an effective strategy to simultaneously achieve high adsorption performance and convenient recyclability for wastewater treatment. MDPI 2023-03-02 /pmc/articles/PMC10005193/ /pubmed/36903554 http://dx.doi.org/10.3390/molecules28052307 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Teng, Daoguang Jin, Peng Guo, Wenhuan Liu, Jiang Wang, Wei Li, Peng Cao, Yijun Zhang, Ling Zhang, Ying Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange |
title | Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange |
title_full | Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange |
title_fullStr | Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange |
title_full_unstemmed | Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange |
title_short | Recyclable Magnetic Iron Immobilized onto Chitosan with Bridging Cu Ion for the Enhanced Adsorption of Methyl Orange |
title_sort | recyclable magnetic iron immobilized onto chitosan with bridging cu ion for the enhanced adsorption of methyl orange |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10005193/ https://www.ncbi.nlm.nih.gov/pubmed/36903554 http://dx.doi.org/10.3390/molecules28052307 |
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