期刊
NATURE COMMUNICATIONS
卷 10, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-10381-z
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资金
- Hefei National Laboratory for Physical Sciences at the Microscale
- Hefei Science Center of Chinese Academy of Sciences
- Fujian Institute of Innovation of Chinese Academy of Sciences
- National Natural Science Foundation of China (NSFC) [21571167, 51502282]
- Fundamental Research Funds for the Central Universities [WK2060190053]
- Anhui Province Natural Science Foundation [1608085MB28]
Precise control of interlayer spacing and functionality is crucial in two-dimensional material based membrane separation technology. Here we show anion intercalation in protonated graphite phase carbon nitride (GCN) that tunes the interlayer spacing and functions of GCN-based membranes for selective permeation in aqueous/organic solutions. Sulfate anion intercalation leads to a crystalline and amphipathic membrane with an accessible interlayer spacing at -10.8 angstrom, which allows high solvent permeability and sieves out the solutes with sizes larger than the spacing. We further extend the concept and illustrate the example of GCN-based chiral membrane via incorporating (1R) (-)-10-camphorsulfonic anion into protonated GCN layers. The membrane exhibits a molecular weight cutoff around 150 among various enantiomers and highly enantioselective permeation towards limonene racemate with an enantiomeric excess value of 89%. This work paves a feasible way to achieve water purification and chiral separation technologies using decorated laminated membranes.
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