Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform
Effective extraction of rare earth elements (REE) from the surrounding aqueous environment would relieve the thirsty demand of mining as well as the environmental pollution, thus advancing sustainability progress. Nevertheless, limited extraction capability and harsh enrichment conditions are still...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/179085 |
| _version_ | 1811677407146409984 |
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| author | Feng, Han Liang, Yen Nan Gupta, Nupur Hu, Xiao |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Feng, Han Liang, Yen Nan Gupta, Nupur Hu, Xiao |
| author_sort | Feng, Han |
| collection | NTU |
| description | Effective extraction of rare earth elements (REE) from the surrounding aqueous environment would relieve the thirsty demand of mining as well as the environmental pollution, thus advancing sustainability progress. Nevertheless, limited extraction capability and harsh enrichment conditions are still the notorious critical problems hindering this environmentally favorable path. Herein, we showcase a physisorption driving platform (InVO4) for effective REE enrichment. This delicately designed platform exhibits a unique few-layer structure and thus robust negatively charged surface in the aqueous environment, which implies its powerful attraction towards positively charged species. The adsorption trials towards REE ions have proved this anticipation with a superior adsorption capability of 317.3 mg/g towards Yb3+ and the adsorption reached quasi-equilibrium in only about 10 min. Moreover, this platform could be regenerated quickly and completely in a mild NaCl environment based on the quasi-cationic exchange strategy benefiting from the physisorption nature. Impressively, a ppb-level enrichment of REE ions from the aqueous was realized 78-fold increase from an initial concentration of 100 ppb. This environmentally benign and highly efficient adsorbent will be inspiring for a more sustainable utilization route for the recovery of REE resources. |
| first_indexed | 2024-10-01T02:36:52Z |
| format | Journal Article |
| id | ntu-10356/179085 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:36:52Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1790852024-07-17T04:57:56Z Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform Feng, Han Liang, Yen Nan Gupta, Nupur Hu, Xiao School of Materials Science and Engineering Nanyang Environment and Water Research Institute Environmental Chemistry and Materials Centre Engineering Rare earth element Adsorbent Effective extraction of rare earth elements (REE) from the surrounding aqueous environment would relieve the thirsty demand of mining as well as the environmental pollution, thus advancing sustainability progress. Nevertheless, limited extraction capability and harsh enrichment conditions are still the notorious critical problems hindering this environmentally favorable path. Herein, we showcase a physisorption driving platform (InVO4) for effective REE enrichment. This delicately designed platform exhibits a unique few-layer structure and thus robust negatively charged surface in the aqueous environment, which implies its powerful attraction towards positively charged species. The adsorption trials towards REE ions have proved this anticipation with a superior adsorption capability of 317.3 mg/g towards Yb3+ and the adsorption reached quasi-equilibrium in only about 10 min. Moreover, this platform could be regenerated quickly and completely in a mild NaCl environment based on the quasi-cationic exchange strategy benefiting from the physisorption nature. Impressively, a ppb-level enrichment of REE ions from the aqueous was realized 78-fold increase from an initial concentration of 100 ppb. This environmentally benign and highly efficient adsorbent will be inspiring for a more sustainable utilization route for the recovery of REE resources. Nanyang Technological University This paper was supported by funding from NEWRI (04-OI-S-00140-N025 OOE01). 2024-07-17T04:57:56Z 2024-07-17T04:57:56Z 2024 Journal Article Feng, H., Liang, Y. N., Gupta, N. & Hu, X. (2024). Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform. Chemical Engineering Journal, 490, 151847-. https://dx.doi.org/10.1016/j.cej.2024.151847 1385-8947 https://hdl.handle.net/10356/179085 10.1016/j.cej.2024.151847 2-s2.0-85192101854 490 151847 en 04-OI-S-00140-N025 OOE01 Chemical Engineering Journal © 2024 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering Rare earth element Adsorbent Feng, Han Liang, Yen Nan Gupta, Nupur Hu, Xiao Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform |
| title | Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform |
| title_full | Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform |
| title_fullStr | Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform |
| title_full_unstemmed | Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform |
| title_short | Efficient rare earth enrichment through highly reversible physisorption on a negatively charged few-layer nanobelt platform |
| title_sort | efficient rare earth enrichment through highly reversible physisorption on a negatively charged few layer nanobelt platform |
| topic | Engineering Rare earth element Adsorbent |
| url | https://hdl.handle.net/10356/179085 |
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