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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...

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Autores principales: Teng, Daoguang, Jin, Peng, Guo, Wenhuan, Liu, Jiang, Wang, Wei, Li, Peng, Cao, Yijun, Zhang, Ling, Zhang, Ying
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
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.
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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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