Cross‑Flow Membrane Separation: Optimize Nanoparticle Slurry Concentration and Purification

Conventional centrifugation and filter‑press processes for nanoparticle slurry suffer from high material loss, excessive water usage and particle agglomeration. Cross‑flow ultrafiltration membrane technology achieves concentration and desalting of nanoparticle stock solution through purely physical room‑‑temperature separation. It retains nano‑particles while removing salts and small‑molecule impurities by diafiltration. This solution improves product yield, saves water, preserves particle properties and enables automatic continuous production, offering an eco‑friendly liquid‑solid‑separation option for nanomaterial manufacturing.