Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 14, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202200482
Keywords
2D Membranes; Membrane Separation; Pillararene; Ti3C2Tx MXene; Water Purification
Categories
Funding
- National Key R&D Program of China [2021YFB3802200]
- National Natural Science Foundation of China [22073070]
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The article introduces a membrane technology for purifying water containing antibiotics, which achieves high permeance and rejection rates through the preparation of hybrid nanosheets with large lateral size and regular structure. This membrane technology is expected to be widely used in academia and industry.
Discharge of antibiotic-containing wastewater causes environmental pollution and threatens biological and human health. An efficient treatment method for this wastewater is urgently required. We prepared inorganic-organic hybrid MXene-pillararene nanosheets with a large lateral size (5-8 mu m). The hybrid nanosheets were stacked on supports via vacuumassisted filtration to prepare membranes with regular parallel slits and an interlayer spacing of 1.36 nm, which were used to purify antibiotic-containing water. Permeance through the membrane increased 100-fold compared with most polymeric and other two-dimensional nanofiltration membranes with similar rejection. This high permeance and rejection was attributed to the large lateral size of the nanosheets, regular interlayer spacing, and electrostatic interaction between the membrane and antibiotics. These membranes will broaden the applications of lamellar materials for the separation of highvalue-added drugs in academia and industry.
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