Rapid separation of the low concentration Pd from Pd-Pt coexisting systems : Cyano-group's monomer-specific affinity
Copyright © 2024 Elsevier Inc. All rights reserved..
Rapid separation of low concentration palladium (Pd) from Pd-Platinum (Pt) coexisting systems remains a formidable challenge, primarily due to the undifferentiated substitution of ligands in Pd/Pt complexes by adsorption sites. The development of an adsorbent featuring monomer-specific affinity adsorption sites for Pd/Pt could mitigate this drawback. Herein, Manganese hexacyanoferrate (MnHCF) possessing the sensitivity and specificity to Pd ions (Pd(II)) was synthesized via the facile co-precipitation method. MnHCF could rapidly and selectively capture 90.30 % of Pd(II) from a 10 ppm Pd-Pt coexisting system within just 5 min. Spectroscopic analyses and density functional theory (DFT) calculations indicated that cyano-group (CN) in MnHCF exhibited the monomer-specific affinity for targeted capturing Pd via the direct and strong coordination interaction (Fe-CN-PdCl2), which was co-determined by the electron-losing of C (0.06 e) and N (0.07 e) atom. At the same time, CN could neither react directly with the fully coordinated [PtCl6]2- species nor substitute the Cl- ligand, both of which contributed to the non-adsorption of Pt, thus triggering the Pd-Pt separation. This study provides a promising candidate adsorbent for practical applications in platinum group metals recovery by the design of adsorption sites with monomer-specific affinity.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:665 |
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| Enthalten in: |
Journal of colloid and interface science - 665(2024) vom: 16. Apr., Seite 422-429 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Liu, Meng [VerfasserIn] |
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| Links: |
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| Themen: |
Cyano-group |
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| Anmerkungen: |
Date Revised 16.04.2024 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1016/j.jcis.2024.02.105 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM368555801 |
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| 500 | |a Date Revised 16.04.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2024 Elsevier Inc. All rights reserved. | ||
| 520 | |a Rapid separation of low concentration palladium (Pd) from Pd-Platinum (Pt) coexisting systems remains a formidable challenge, primarily due to the undifferentiated substitution of ligands in Pd/Pt complexes by adsorption sites. The development of an adsorbent featuring monomer-specific affinity adsorption sites for Pd/Pt could mitigate this drawback. Herein, Manganese hexacyanoferrate (MnHCF) possessing the sensitivity and specificity to Pd ions (Pd(II)) was synthesized via the facile co-precipitation method. MnHCF could rapidly and selectively capture 90.30 % of Pd(II) from a 10 ppm Pd-Pt coexisting system within just 5 min. Spectroscopic analyses and density functional theory (DFT) calculations indicated that cyano-group (CN) in MnHCF exhibited the monomer-specific affinity for targeted capturing Pd via the direct and strong coordination interaction (Fe-CN-PdCl2), which was co-determined by the electron-losing of C (0.06 e) and N (0.07 e) atom. At the same time, CN could neither react directly with the fully coordinated [PtCl6]2- species nor substitute the Cl- ligand, both of which contributed to the non-adsorption of Pt, thus triggering the Pd-Pt separation. This study provides a promising candidate adsorbent for practical applications in platinum group metals recovery by the design of adsorption sites with monomer-specific affinity | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Cyano-group | |
| 650 | 4 | |a Direct coordination | |
| 650 | 4 | |a Monomer-specific affinity | |
| 650 | 4 | |a Pd recovery | |
| 650 | 4 | |a Pd-Pt separation | |
| 700 | 1 | |a Du, Yuxuan |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Yu |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Xiaoping |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Shengjiong |e verfasserin |4 aut | |
| 700 | 1 | |a Feng, Jinpeng |e verfasserin |4 aut | |
| 700 | 1 | |a Huang, Zonghan |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Yang |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Bo |e verfasserin |4 aut | |
| 700 | 1 | |a Chen, Rongzhi |e verfasserin |4 aut | |
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