How to extract silver nanoparticles from citrate solution?
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You can suitably measure these directly.If you dry electrostatically stabilized nanoparticles they will aggregate (irreversibly) unless you add coatings. Lyophilization (as pointed out earlier) is a great approach, but requires some process optimization (see link below)We have used pressurized stirred cell ultrafiltration to purify/wash/concentrate suspensions of metal nanoparticles.
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