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Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads
To recover Au(iii) from an acidic chloride-containing solution efficiently, an ionic liquid absorbent (CMPS-IL) was synthesized by grafting N-methyl imidazole onto chloromethylated polystyrene beads (CMPS). The adsorption capacity, selectivity, and reusability were systematically evaluated by a seri...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054204/ https://www.ncbi.nlm.nih.gov/pubmed/35520412 http://dx.doi.org/10.1039/d0ra03504a |
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author | Kou, Xin Ma, Bowen Zhang, Rui Cai, Miaomiao Huang, Yong Yang, Ying |
author_facet | Kou, Xin Ma, Bowen Zhang, Rui Cai, Miaomiao Huang, Yong Yang, Ying |
author_sort | Kou, Xin |
collection | PubMed |
description | To recover Au(iii) from an acidic chloride-containing solution efficiently, an ionic liquid absorbent (CMPS-IL) was synthesized by grafting N-methyl imidazole onto chloromethylated polystyrene beads (CMPS). The adsorption capacity, selectivity, and reusability were systematically evaluated by a series of adsorption experiments. The maximum adsorption capacity reached up to 516.5 mg g(−1) at 318 K. The adsorbent can selectively recover Au(iii) from binary system solutions with a higher separation factor β(Au/M) (10(4)–10(6)). Moreover, the adsorption–desorption cycles (7 cycles) showed that the CMPS-IL maintained a stable adsorption performance and high adsorption efficiency. Finally, the adsorption mechanism of CMPS-IL for Au(iii) was investigated by SEM, TEM, XPS, and FT-IR, then proposed with a combination of electrostatic interactions and d–π interaction between imidazolium and AuCl(4)(−). This study provides an easily-prepared and economical adsorbent for Au(iii) with high selectivity and large adsorption capacity to boost its practical applications. |
format | Online Article Text |
id | pubmed-9054204 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90542042022-05-04 Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads Kou, Xin Ma, Bowen Zhang, Rui Cai, Miaomiao Huang, Yong Yang, Ying RSC Adv Chemistry To recover Au(iii) from an acidic chloride-containing solution efficiently, an ionic liquid absorbent (CMPS-IL) was synthesized by grafting N-methyl imidazole onto chloromethylated polystyrene beads (CMPS). The adsorption capacity, selectivity, and reusability were systematically evaluated by a series of adsorption experiments. The maximum adsorption capacity reached up to 516.5 mg g(−1) at 318 K. The adsorbent can selectively recover Au(iii) from binary system solutions with a higher separation factor β(Au/M) (10(4)–10(6)). Moreover, the adsorption–desorption cycles (7 cycles) showed that the CMPS-IL maintained a stable adsorption performance and high adsorption efficiency. Finally, the adsorption mechanism of CMPS-IL for Au(iii) was investigated by SEM, TEM, XPS, and FT-IR, then proposed with a combination of electrostatic interactions and d–π interaction between imidazolium and AuCl(4)(−). This study provides an easily-prepared and economical adsorbent for Au(iii) with high selectivity and large adsorption capacity to boost its practical applications. The Royal Society of Chemistry 2020-05-27 /pmc/articles/PMC9054204/ /pubmed/35520412 http://dx.doi.org/10.1039/d0ra03504a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Kou, Xin Ma, Bowen Zhang, Rui Cai, Miaomiao Huang, Yong Yang, Ying Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads |
title | Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads |
title_full | Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads |
title_fullStr | Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads |
title_full_unstemmed | Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads |
title_short | Properties and mechanism for selective adsorption of Au(iii) on an ionic liquid adsorbent by grafting N-methyl imidazole onto chloromethylated polystyrene beads |
title_sort | properties and mechanism for selective adsorption of au(iii) on an ionic liquid adsorbent by grafting n-methyl imidazole onto chloromethylated polystyrene beads |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054204/ https://www.ncbi.nlm.nih.gov/pubmed/35520412 http://dx.doi.org/10.1039/d0ra03504a |
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