Roles and gains of coordination chemistry in nanofiltration membrane: A review

Zhou, Zhengzhong; Lu, Tian-Dan; Sun, Shi‐Peng; Wang, Qian

doi:10.1016/j.chemosphere.2023.137930

Cited by 16 publications

(2 citation statements)

References 128 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comparatively, membrane separation, which benefits from energy efficiency, environmental friendliness, and ease of operation, should be considered an ideal method for precise separation. − In order to achieve such a purpose, membranes require the highly uniform distribution of proper pore size. With characteristics intermediate between reverse osmosis (RO) and ultrafiltration (UF), nanofiltration (NF) membranes have distinguishing characteristics specifically for the targeted rejection of divalent/polyvalent salt ions and the inverse passage of monovalent salt ions and small organic molecules of less than 200 Da . Therefore, it is of paramount importance to develop new NF membranes to precisely sieve subnanometer-sized solutes.…”

Section: Introductionmentioning

confidence: 99%

“…With characteristics intermediate between reverse osmosis (RO) and ultrafiltration (UF), nanofiltration (NF) membranes have distinguishing characteristics specifically for the targeted rejection of divalent/polyvalent salt ions and the inverse passage of monovalent salt ions and small organic molecules of less than 200 Da. 7 Therefore, it is of paramount importance to develop new NF membranes to precisely sieve subnanometer-sized solutes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Amphiphilic Interlayer Regulated Interfacial Polymerization for Constructing Polyamide Nanofiltration Membranes with High Perm-Selectivity of Mono-/Divalent Salts

Zhang,

et al. 2024

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

High-quality thin-film composite (TFC) membranes with high selectivity and permeability have great significance owing to their practical applications, specifically for the accurate differentiation of monovalent and divalent ions. However, the trade-off effect between selectivity and permeability is still a big challenge due to the difficult structure adjustment of the selective layer. Herein, polydopamine (PDA) functionalized with a hydrophobic long alkane chain was first explored as a functional amphiphilic interlayer to synthesize high-quality TFC membranes via a confined interfacial polymerization (IP) reaction. The amphiphilic interlayer not only restricted the formation of the polyamide (PA) matrix in the pores of the substrate but also accelerated spatially more homogeneous polymerization and formed a PA active layer with a more uniform pore size distribution. The method may provide an effective principle for the construction of versatile polyamide-based membranes with high perm-selectivity on various supports. The NaCl/Na2SO4 separation factor of the D-8/PA membrane reached as high as 204.07, while the flux increased up to 25.71 L m–2 h–1 bar–1. This progress provides a more feasible way for the construction of high-quality TFC membranes with a devisable and creative amphiphilic interlayer for industrial application.

show abstract