Cobalt oxide nanoparticle is insoluble in water. I have tried to dissolve this in a number of acids and bases. Can anyone suggest me an ideal solvent which can dissolve cobalt oxide nanoparticle?
Take a solution mixture containing of NH4OH and NaOH[1:1] . Deoxygenate it by passing N2 or H2 . Add CoO and go on heating the mixture solution till it dissolves( up to 290C).
REF:
Journal of Solution Chemistry
July 1999, Volume 28, Issue 7, pp 809-836.
Cobalt Oxide Solubility and Phase Solubility in Alkaline Medium at Elevated Temperatures
S.E. Ziemniak, M.A. Goyette and K.E.S. Combs.
Hi Kashmiri,
At first, try to dissolve your cobalt oxide nanoparticles in appropriate amounts of HNO3, which in my point of view, is suitable. Just in case you are not able to dissolve it in this way , you definitely will do that with 1:1 ratio of H2O2 and HNO3 by volume.
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