How can I remove sodium oleate from the surface of magnetic nanoparticles obtained by mechanical grinding? How can I disperse them?

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Sadeq H. Lafta

I think sodium oleate dissolve in water, so you can wash your particles several times by D.W. Here oxidation problem is present. Ether or methanol are good candidates.

Lostun Mihaela

Thanks for the reply!

It is true that sodium oleate is soluble in water, but there is still a layer of a few nanometers on the surface of the nanoparticle and this causes agglomeration. If I use Methanol for example, I am afraid that powders could be toxic for my compatibility applications.