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Substrate pore size regulating the structure and performance of polyamide nanofiltration membranes for ion separation
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PRE
AI
Y
J
W
Y
S
张
X
Y
X
G
Y
L
DOI：10.1016/j.desal.2026.120621.png)
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Abstract
En 中文
• Substrate pore size dictates monomer diffusion via capillarity. • 30 k Da substrate balances monomer transport & reaction, forming uniform sub-nm pores. • NF-30 k membrane achieves exceptional ion separation: SCl,SO4 = 108, SLi,Mg = 29.1. • NF pore distribution matching hydration diameters is the key to ion separation. • Membrane shows 240 h stability & superior Li/Mg separation in 5 simulated brines.
Keywords:
Nanofiltration membrane
Interfacial polymerization
Substrate pore size
Monomer diffusion
Capillary effect
Ion separation
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