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How to make your own nano-silver liquid bandage at home

10/23/2019

1 Comment

 


Materials:
- Lemon leaves 25g
- Silver Nitrate solution
- PVP (polyvinylpyrrolidone) powder
 - Distill water
​
Step 1:  Biosynthesis of Silver   Nanoparticles
- Wash 25g of fresh lemon leaves in distilled water.
- Cut the lemon  leaves into small pieces
- Add the pieces of lemon leaves in a glass beaker filled with 100 ml of boiling distilled water for 10 minutes.
-  Filter through Whatman filter paper no.42.
- The leave extract solution will be used as a reducing and capping agent.
- Add 5ml lemon leaf extract slowly into 45ml 0.002M AgNO3 solution in 100ml flasks at room temperature in dark. Wait one hour for the biosynthesis process to occur.  The solution will turn to light brown.

Step 2:  Creating the Liquid Bandages with liquid polymer
- Dissolve 2g of polyvinylpyrrolidone (PVP) powder in 100ml distill water.  PVP is a water-solution polymer.
- Add 10ml of  nanosilver solution to the PVP solution to create the liquid bandage 
That's it.  You have your nano-silver liquid bandage!

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1 Comment
Paul Curran
5/3/2023 11:29:24 am

Hey there! I'm doing a final project for AP chemistry on liquid bandages with a few other people, where we synthesize a couple different liquid bandages and then test their effectiveness. I have a few questions about the whole process, if you're still monitoring the website. Specifically, what exactly is the chemical reaction going on? What chemicals are released from boiling the leaves, and then how does that then react with silver nitrate to produce silver nanoparticles? And then how does the PVP powder react with the silver nanoparticles to form the adhesive? If you're still monitoring this website and are willing to explain the chemical process to me, that would be wonderful. Thanks!

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