Can you anyone clarrify my doubt i am going to prepare nanoparticle by acid precipitate method. In this method, what type of acid solution add to source material solution? that solution either concentrate acid solution (or) diluted acid solution?
Open the table of solubility products.
http://bilbo.chm.uri.edu/CHM112/tables/KspTable.htm
See solubility product AgCl. The product concentration of hydrochloric acid and silver nitrate to be larger than the product solubility. The greater the concentration of ions the greater the size of the nanoparticles. For your size you have to pick up the concentration.
Best regards.
Generally speaking you'll need some form of pH control for nanoparticle preparation in solution. This usually means lower concentrations of acid or alkali (e.g. diammine complexes is Ag nanoparticle formation) . A lot of precursors are chlorides (solubility reasons) and these can be acidic too. Take a look at:
February 18th, 2016 Metal colloids - their preparation, application and characterization
https://www.brainshark.com/malvern/vu?pi=529368070&b=1&tx=120486&c1=22
and
September 2nd, 2015 Silver colloids and invisible ink
https://www.brainshark.com/malvern/vu?pi=560497681&b=1&tx=120486&c1=22
this link will help you http://bilbo.chm.uri.edu/CHM112/tables/KspTable.htm
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