I am trying to make a reasonably stable GaN suspension using its powder which has an average flake size of 200 nm. What are the best solvents for this purpose?
The surface of gallium nitride adsorbs well the anions of chlorine, bromine, iodine from the aqueous solution. Therefore, water with sodium chloride can be used as the dispersant. It is better to add a neutral thickener of polyethylene oxide to the solution.
http://www.analytical-chemistry.uoc.gr/files/items/6/639/11-ima05_alifragis.pdf
Thank you very much, Dr. Mirgorod. Your suggestion seems to match with my experimental observations.
Dear Yuri,
Thanks to remind me the rule, but I want to challenge your suggestion for NaCl as I am sure LiCl and SbCl3 work much better than NaCl to get a well suspension. Just google and find some text doesn't mean your answer is correct. We are here to help others in the based way based on our experience and observation in our own research!!
Dear Ali,
The presence of a link does not mean that we do not have our studies. They have not been published yet. If you have proof of your research, then imagine it for us. Disadvantages of your answer:
1. You did not specify the dispersant (water).
2. Hydrolysis of antimony (III) chloride proceeds with the formation of a slightly solubile chloride of oxo-antimony (III): SbCl3 + H2O = SbOHCl2 + HCl
Therefore, SbCl3 can not be a suspension stabilizer
3. Particles of 200 nm are not nanoparticles. They are large and quickly settle. Therefore, it is necessary to increase the viscosity of the dispersant by adding a neutral high molecular weight water-soluble compound.
Regards.
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