How to eliminate silver ions in the supernatant and to get Bio Pure silver Nanoparticles

While centrifugation -How to eliminate silver ions in the supernatant and to get Bio Pure silver Nanoparticles- one way is by using the blend of reducing agents like D-glucose and hydrazine are there any other alternatives.

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You could use cysteine as a ligand. Navarro did a study that used cysteine to eliminate Ag+ ions.
to get biopure nps centrifuge 4-5 times , remove the supernatant and centrifuge again by adding millipore water ,,,dis will help you reduce the concentration of ag+ ions by 96% ...
few drops of NaBH4 will reduce everything...

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