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Polyamide-based membranes with structural homogeneity for ultrafast molecular sieving
Open accessAbstract
Thin-film composite membranes formed by conventional interfacial polymerization generally suffer from the depth heterogeneity of the polyamide layer, i.e., nonuniformly distributed free volume pores, leading to the inefficient permselectivity. Here, we demonstrate a facile and versatile approach to tune the nanoscale homogeneity of polyamide-based thin-film composite membranes via inorganic salt-mediated interfacial polymerization process. Molecular dynamics simulations and various characterization techniques elucidate in detail the underlying molecular mechanism by which the salt addition confines and regulates the diffusion of amine monomers to the water-oil interface and thus tunes the nanoscale homogeneity of the polyamide layer. The resulting thin-film composite membranes with thin, smooth, dense, and structurally homogeneous polyamide layers demonstrate a permeance increment of ~20–435% and/or solute rejection enhancement of ~10–170% as well as improved antifouling property for efficient reverse/forward osmosis and nanofiltration separations. This work sheds light on the tunability of the polyamide layer homogeneity via salt-regulated interfacial polymerization process.
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Cited by
Shao, S., Zeng, F., Long, L., Zhu, X., Peng, L. E., Wang, F., Yang, Z., & Tang, C. Y. (2022) · Environmental Science & Technology · doi:10.1021/acs.est.2c04736 · Cited by 355
Anhydrous interfacial polymerization of sub-1 Å sieving polyamide membrane
Zhao, G., Gao, H., Qu, Z., Fan, H., & Meng, H. (2023) · Nature Communications · doi:10.1038/s41467-023-43291-2 · Cited by 268
Metadata
- Authors
- Shen, L., Cheng, R., Yi, M., Hung, W.-S., Japip, S., Tian, L., Zhang, X., Jiang, S., Li, S., & Wang, Y.
- Venue
- Nature Communications
- Published
- 2022-01-25
- Volume
- 13
- Issue
- 1
- Pages
- 500-500
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W4210602991
- Cited by
- 371
- References
- 30
- FWCI
- 19.89
- Type
- journal article
- Language
- en
- Open access
- gold
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- Shen, L., Cheng, R., Yi, M., Hung, W.-S., Japip, S., Tian, L., Zhang, X., Jiang, S., Li, S., & Wang, Y. (2022). Polyamide-based membranes with structural homogeneity for ultrafast molecular sieving. Nature Communications. https://doi.org/10.1038/s41467-022-28183-1
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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