| Autor: |
Ming Yi, Mi Wang, Yan Wang, Yanlei Wang, Jian Chang, Atefeh Khorsand Kheirabad, Hongyan He, Jiayin Yuan, Miao Zhang |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Angewandte Chemie (International ed. in English). 61(27) |
| ISSN: |
1521-3773 |
| Popis: |
Two-dimensional (2D) MXene-based lamellar membranes bearing interlayers of tunable hydrophilicity are promising for high-performance water purification. The current challenge lies in how to engineer the pore wall's surface properties in the subnano-confinement environment while ensuring its high selectivity. Herein, poly(ionic liquid)s, equipped with readily exchangeable counter anions, succeeded as a hydrophilicity modifier in addressing this issue. Lamellar membranes bearing nanochannels of tailorable hydrophilicity are constructed via assembly of poly(ionic liquid)-armored MXene nanosheets. By shifting the interlayer galleries from being hydrophilic to more hydrophobic via simple anion exchange, the MXene membrane performs drastically better for both the permeance (by two-fold improvement) and rejection (≈99 %). This facile method opens up a new avenue for building 2D material-based membranes of enhancing molecular transport and sieving effect. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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