The long term stability of nanosilver is highly dependent on the nature of stabilizer and solvent. Solvents with low solubility to oxygen, like as higher hydrocarbons, are appropriate.
the attached file will give you an idea for stability of synthesized nanoparticles. even water can act as a good stabilizer if you are dealing with fungi. some phenolic acid-type biomolecules, alkaloids, proteins/enzymes present in plants itself act as a stabilizer in case of plants. In order to control size and shape of NPs, Kasthuri and Co-workers (2009) used different amounts of apiin (as the reducing agent). The NPs were stable in water for 3 months, which could be attributed to surface binding of apiin to NPs.
The various synthetic and natural polymers such as poly(ethylene glycol), poly-(N-vinyl-2-pyrrolidone), starch, heparin, poly-cationic chitosan (1-4-linked 2-amino-2-deoxy -β-D-glucose), sodium alginate, and gum acacia have been reported as reducing and stabilizing agents for biosynthesis of silver NPs.
Its highly informative Miss Dhana Lakshmi. Thanks for giving such precious research paper i was looking for,Thanks once again.Hope this will strengthen PAK-INDIA cross boarder scientific ties. :)
Stability within 3 months is too small time if conventional shelf-life is needed.
Always better to store in water, but if you prepare b-AgNPs in water. It can be stored as pellet form for more than 6 months at 4 degree.
- Badges
- Science topic