Have you got a stock solution or do you need to make one? As a general overview you may wish to take a look at the following webinars:
September 2nd, 2015 Silver colloids and invisible ink
https://www.brainshark.com/malvern/vu?pi=560497681&b=1&tx=120486&c1=22
February 18th, 2016 Metal colloids - their preparation, application and characterization
https://www.brainshark.com/malvern/vu?pi=529368070&b=1&tx=120486&c1=22
Good luck!
Actually I have 1 g AgNPs, now I want to mix with water. How can I assure its dissolution/dispersion in water uniformly?
Almost certainly you'll cause agglomeration and aggregation of your particles if you dilute in DI water. Ideally you dilute in the mother liquor - the same ionic make up as contained in the continuous phase in your stock solution.
to study the nanoparticle size in water you may have to do the DLS characterization from where we can get the particle size.
Dear Ali,
As Ms. Bora said it is best to determine size by using DLS and it will give you hydrodynamic diameter. You can also find nanoparticle size from TEM image and some image processing software.
However, if you just want to ensure size distribution but not size, DLS should be fine.
I am re-reading the question and it appears from your statement "Actually I have 1 g AgNPs, now I want to mix with water. How can I assure its dissolution/dispersion in water uniformly?" that you have a solid material. Am I correct? If so you can never re-disperse the solid to nano-form where you have free discrete particles in colloidal suspension. See:
Nov 11th, 2008. Dispersion and nanotechnology http://tinyurl.com/hpywsge
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