Scalable Highly Ionized Sub‐10 Nm Nanofiltration Membranes Enabled by Interfacial Water on Layered Double Hydroxides

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Abstract
The rapid and efficient separation of nanoscale targets in liquid matrices presents a critical yet formidable challenge. Polyamide (PA) membranes, while recognized as the benchmark for industrial‐scale nanoscale separation, face ongoing limitations in performance optimization. Although advances in nanomaterials have enabled breakthroughs in PA membrane performance, scalable production remains hindered by integration challenges. Here, we present a scalable strategy to fabricate ultra‐thin (−2 h −1 bar −1 and a Na 2 SO 4 rejection rate of 95.7%, achieving one of the best‐reported levels. Leveraging the accessibility of LDH colloids and the scalable fabrication process, this strategy enables the production of large‐area membranes via spraying and IP, making it highly promising for purifying and recovering antibiotics.
Funding Information
  • National Key Research and Development Program of China (2019YFC1806203)
  • Fundamental Research Funds for the Central Universities (XK1802‐6)
  • Fundamental Research Funds for the Central Universities (BHYC1702B)
  • Fundamental Research Funds for the Central Universities (XK1803‐05)

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