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Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment
A novel Cr (VI) removal material was designed and produced comprising multi-walled carbon nanotubes (MWCNTs) as a support with a high specific surface area and the loaded Fe–Ni bimetallic particles as catalytic reducing agents. Such a design permits the composite particle to perform the adsorption,...
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/PMC10254850/ https://www.ncbi.nlm.nih.gov/pubmed/37298888 http://dx.doi.org/10.3390/molecules28114412 |
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author | Kang, Zeyu Gao, Hui Ma, Xiaolong Jia, Xiaodong Wen, Dongsheng |
author_facet | Kang, Zeyu Gao, Hui Ma, Xiaolong Jia, Xiaodong Wen, Dongsheng |
author_sort | Kang, Zeyu |
collection | PubMed |
description | A novel Cr (VI) removal material was designed and produced comprising multi-walled carbon nanotubes (MWCNTs) as a support with a high specific surface area and the loaded Fe–Ni bimetallic particles as catalytic reducing agents. Such a design permits the composite particle to perform the adsorption, reduction, and immobilisation of Cr (VI) quickly and efficiently. Due to MWCNTs’ physical adsorption, Cr (VI) in solution aggregates in the vicinity of the composite, and Fe rapidly reduces Cr (VI) to Cr (III) catalysed by Ni. The results demonstrated that the Fe–Ni/MWCNTs exhibits an adsorption capacity of 207 mg/g at pH = 6.4 for Cr (VI) and 256 mg/g at pH 4.8, which is about twice those reported for other materials under similar conditions. The formed Cr (III) is solidified to the surface by MWCNTs and remains stable for several months without secondary contamination. The reusability of the composites was proven by retaining at least 90% of the adsorption capacity for five instances of reutilization. Considering the facile synthesis process, low cost of raw material, and reusability of the formed Fe–Ni/MWCNTs, this work shows great potential for industrialisation. |
format | Online Article Text |
id | pubmed-10254850 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-102548502023-06-10 Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment Kang, Zeyu Gao, Hui Ma, Xiaolong Jia, Xiaodong Wen, Dongsheng Molecules Article A novel Cr (VI) removal material was designed and produced comprising multi-walled carbon nanotubes (MWCNTs) as a support with a high specific surface area and the loaded Fe–Ni bimetallic particles as catalytic reducing agents. Such a design permits the composite particle to perform the adsorption, reduction, and immobilisation of Cr (VI) quickly and efficiently. Due to MWCNTs’ physical adsorption, Cr (VI) in solution aggregates in the vicinity of the composite, and Fe rapidly reduces Cr (VI) to Cr (III) catalysed by Ni. The results demonstrated that the Fe–Ni/MWCNTs exhibits an adsorption capacity of 207 mg/g at pH = 6.4 for Cr (VI) and 256 mg/g at pH 4.8, which is about twice those reported for other materials under similar conditions. The formed Cr (III) is solidified to the surface by MWCNTs and remains stable for several months without secondary contamination. The reusability of the composites was proven by retaining at least 90% of the adsorption capacity for five instances of reutilization. Considering the facile synthesis process, low cost of raw material, and reusability of the formed Fe–Ni/MWCNTs, this work shows great potential for industrialisation. MDPI 2023-05-29 /pmc/articles/PMC10254850/ /pubmed/37298888 http://dx.doi.org/10.3390/molecules28114412 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 Kang, Zeyu Gao, Hui Ma, Xiaolong Jia, Xiaodong Wen, Dongsheng Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment |
title | Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment |
title_full | Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment |
title_fullStr | Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment |
title_full_unstemmed | Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment |
title_short | Fe–Ni/MWCNTs Nano-Composites for Hexavalent Chromium Reduction in Aqueous Environment |
title_sort | fe–ni/mwcnts nano-composites for hexavalent chromium reduction in aqueous environment |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254850/ https://www.ncbi.nlm.nih.gov/pubmed/37298888 http://dx.doi.org/10.3390/molecules28114412 |
work_keys_str_mv | AT kangzeyu fenimwcntsnanocompositesforhexavalentchromiumreductioninaqueousenvironment AT gaohui fenimwcntsnanocompositesforhexavalentchromiumreductioninaqueousenvironment AT maxiaolong fenimwcntsnanocompositesforhexavalentchromiumreductioninaqueousenvironment AT jiaxiaodong fenimwcntsnanocompositesforhexavalentchromiumreductioninaqueousenvironment AT wendongsheng fenimwcntsnanocompositesforhexavalentchromiumreductioninaqueousenvironment |