High-efficiency dysprosium-ion extraction enabled by a biomimetic nanofluidic channel
Biological ion channels exhibit high selectivity and permeability of ions because of their asymmetrical pore structures and surface chemistries. Here, we demonstrate a biomimetic nanofluidic channel (BNC) with an asymmetrical structure and glycyl-L-proline (GLP) -functionalization for ultrafast, sel...
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Published in | Nature communications Vol. 15; no. 1; pp. 5876 - 11 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Nature Publishing Group
12.07.2024
Nature Portfolio |
Subjects | |
Online Access | Get full text |
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Summary: | Biological ion channels exhibit high selectivity and permeability of ions because of their asymmetrical pore structures and surface chemistries. Here, we demonstrate a biomimetic nanofluidic channel (BNC) with an asymmetrical structure and glycyl-L-proline (GLP) -functionalization for ultrafast, selective, and unidirectional Dy
extraction over other lanthanide (Ln
) ions with very similar electronic configurations. The selective extraction mainly depends on the amplified chemical affinity differences between the Ln
ions and GLPs in nanoconfinement. In particular, the conductivities of Ln
ions across the BNC even reach up to two orders of magnitude higher than in a bulk solution, and a high Dy
/Nd
selectivity of approximately 60 could be achieved. The designed BNC can effectively extract Dy
ions with ultralow concentrations and thereby purify Nd
ions to an ultimate content of 99.8 wt.%, which contribute to the recycling of rare earth resources and environmental protection. Theoretical simulations reveal that the BNC preferentially binds to Dy
ion due to its highest affinity among Ln
ions in nanoconfinement, which attributes to the coupling of ion radius and coordination matching. These findings suggest that BNC-based ion selectivity system provides alternative routes to achieving highly efficient lanthanide separation. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2041-1723 2041-1723 |
DOI: | 10.1038/s41467-024-50237-9 |