We are trying to prepare silver nanocrystals, and then try to work on its formula.
The problem is, after the synthesis, we are not able to obtain the crystals to the best of our liking. We obtain a precipitate everytime, which we do not require, by using Toluene, Hexane and ethanol in tuned quantities and adding it to the solid powder and keeping it in the deep freezer.
Can someone suggest a good method to obtain the same? Thank you!
Will you please provide more details? Precipitation might be caused by incorrect concentration of reactants/surfactants/stabilizers. Even temperature and pH may affect your results. If you provide more details then we can rule out some factors and improve your synthesis.
may be this pdf will help you
http://www.ysxbcn.com/down/2014/05_en/25-p1452.pdf
Try to make your solution in Deionized water ,use millimolar solutions of precursor and reagent,choose a suitable surfactant and stabilizer,I hope you will get off these problems ,I'm totally agree with Ming Zhang and Titus Sobisch point of views also.
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