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Crown Ether Grafted Graphene Oxide/Chitosan/Polyvinyl Alcohol Nanofiber Membrane for Highly Selective Adsorption and Separation of Lithium Ion
Content Provider | MDPI |
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Author | Zheng, Xudong Li, Ang Hua, Jie Zhang, Yuzhe Li, Zhongyu |
Copyright Year | 2021 |
Description | Nanofiber membranes were successfully prepared with crown ether (CE) functionalized graphene oxide (GO), chitosan (CS), and polyvinyl alcohol (PVA) by low-temperature thermally induced liquid–liquid phase separation. The physical and chemical properties and adsorption performance of nanofiber membrane were studied through SEM, FT-IR, XRD, and static adsorption experiments. The results show that the specific surface area of the nanofiber membrane is as high as 101.5 $m^{2}∙g^{−1}$. The results of static adsorption experiments show that the maximum adsorption capacity of the nanofiber membrane can reach 168.50 $mg∙g^{−1}$ when the pH is 7.0. In the selective adsorption experiment, the nanofiber membrane showed high selectivity for $Li^{+}$ in salt lake brine. After five cycles, the material still retains 88.31% of the adsorption capacity. Therefore, it is proved that the material has good regeneration ability. |
Starting Page | 2668 |
e-ISSN | 20794991 |
DOI | 10.3390/nano11102668 |
Journal | Nanomaterials |
Issue Number | 10 |
Volume Number | 11 |
Language | English |
Publisher | MDPI |
Publisher Date | 2021-10-11 |
Access Restriction | Open |
Subject Keyword | Nanomaterials Crown Ether Grafting Selective Adsorption Composite Membrane |
Content Type | Text |
Resource Type | Article |