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2021 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 13, no 2, p. 3336-3348Article in journal (Refereed) Published
Abstract [en]
The modular construction of defect-free nanofilms with a large area remains a challenge. Herein, we present a scalable strategy for the preparation of calix[4]pyrrole (C[4]P)-based nanofilms through acryl hydrazone reaction conducted in a tetrahydrazide calix[4]pyrrole (CPTH)-based self-assembled layer at the air/DMSO interface. With this strategy, robust, regenerable, and defect-free nanofilms with an exceptionally large area (similar to 750 cm(2)) were constructed. The thickness and permeability of the film systems can be fine-tuned by varying the precursor concentration or by changing another building block. A typical nanofilm (C[4]P-TFB, similar to 67 nm) depicted high water flux (39.9 L m(2) h(-1) under 1 M Na2SO4), narrow molecular weight cut-off value (similar to 200 Da), and promising antifouling properties in the forward osmosis (FO) process. In addition, the nanofilms are stable over a wide pH range and tolerable to different organic solvents. Interestingly, the introduction of C[4]P endowed the nanofilms with both outstanding mechanical properties and unique group-selective separation capability, laying the foundation for wastewater treatment and pharmaceutical concentration.
Place, publisher, year, edition, pages
American Chemical Society (ACS), 2021
Keywords
calix[4]pyrrole, nanofilms, air/liquid interfacial self-assembly, forward osmosis, molecular separation
National Category
Physical Chemistry
Identifiers
urn:nbn:se:kth:diva-291783 (URN)10.1021/acsami.0c16831 (DOI)000612551400114 ()33356087 (PubMedID)2-s2.0-85099045093 (Scopus ID)
Note
QC 20210323
2021-03-232021-03-232022-06-25Bibliographically approved