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Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions
Exploiting an adsorbent with superb selectivity is of utmost importance for the remediation of Cr (VI)-laden wastewater. In this work, a novel nitrogen and sulfur functionalized 3D macroporous cellulose material (MPS) was prepared by homogeneous cross-link cellulose and polyvinylimidazole, followed...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9821927/ https://www.ncbi.nlm.nih.gov/pubmed/36614522 http://dx.doi.org/10.3390/ma16010184 |
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author | Peng, Xiong Liu, Shujun Luo, Zhijia Yu, Xiwen Liang, Wanwen |
author_facet | Peng, Xiong Liu, Shujun Luo, Zhijia Yu, Xiwen Liang, Wanwen |
author_sort | Peng, Xiong |
collection | PubMed |
description | Exploiting an adsorbent with superb selectivity is of utmost importance for the remediation of Cr (VI)-laden wastewater. In this work, a novel nitrogen and sulfur functionalized 3D macroporous cellulose material (MPS) was prepared by homogeneous cross-link cellulose and polyvinylimidazole, followed by ion exchange with MoS(4)(2−). MPS exhibited high removal efficiency at a broad pH range (1.0–8.0) and large adsorption capacity (379.78 mg/g) toward Cr (VI). Particularly, outstanding selectivity with an enormous partition coefficient (1.01 × 10(7) mL/g) was achieved on MPS. Replacing MoS(4)(2−) with Cl(−) and MoO(4)(2−) led to a sharp decline in adsorption selectivity, demonstrating that MoS(4)(2−) contributed substantially to the selectivity. Results of FTIR, XPS, and apparent kinetic analysis revealed that Cr (VI) was first pre-enriched on the MPS surface via electrostatic and dispersion forces, and then reacted with MoS(4)(2−) to generate Cr (III), which deposited on MPS by forming Cr(OH)(3) and chromium(III) sulfide. This study provides a new idea for designing adsorbents with a superior selectivity for removing Cr (VI) from sewage. |
format | Online Article Text |
id | pubmed-9821927 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98219272023-01-07 Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions Peng, Xiong Liu, Shujun Luo, Zhijia Yu, Xiwen Liang, Wanwen Materials (Basel) Article Exploiting an adsorbent with superb selectivity is of utmost importance for the remediation of Cr (VI)-laden wastewater. In this work, a novel nitrogen and sulfur functionalized 3D macroporous cellulose material (MPS) was prepared by homogeneous cross-link cellulose and polyvinylimidazole, followed by ion exchange with MoS(4)(2−). MPS exhibited high removal efficiency at a broad pH range (1.0–8.0) and large adsorption capacity (379.78 mg/g) toward Cr (VI). Particularly, outstanding selectivity with an enormous partition coefficient (1.01 × 10(7) mL/g) was achieved on MPS. Replacing MoS(4)(2−) with Cl(−) and MoO(4)(2−) led to a sharp decline in adsorption selectivity, demonstrating that MoS(4)(2−) contributed substantially to the selectivity. Results of FTIR, XPS, and apparent kinetic analysis revealed that Cr (VI) was first pre-enriched on the MPS surface via electrostatic and dispersion forces, and then reacted with MoS(4)(2−) to generate Cr (III), which deposited on MPS by forming Cr(OH)(3) and chromium(III) sulfide. This study provides a new idea for designing adsorbents with a superior selectivity for removing Cr (VI) from sewage. MDPI 2022-12-25 /pmc/articles/PMC9821927/ /pubmed/36614522 http://dx.doi.org/10.3390/ma16010184 Text en © 2022 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 Peng, Xiong Liu, Shujun Luo, Zhijia Yu, Xiwen Liang, Wanwen Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions |
title | Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions |
title_full | Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions |
title_fullStr | Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions |
title_full_unstemmed | Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions |
title_short | Selective Removal of Hexavalent Chromium by Novel Nitrogen and Sulfur Containing Cellulose Composite: Role of Counter Anions |
title_sort | selective removal of hexavalent chromium by novel nitrogen and sulfur containing cellulose composite: role of counter anions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9821927/ https://www.ncbi.nlm.nih.gov/pubmed/36614522 http://dx.doi.org/10.3390/ma16010184 |
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