I am working on nanoparticles i need the size of Fe3O4 nanoparticles below 10nm I am using sodium citrate as a stabiliser. In one case I use NH4OH in solution the color of the solution turn black but in the cetrufuge, the nanoparticles are not collected. my teacher said if the color turn to black then nanoparticle absolutely formed find a way to sit down. the method i am using is co-precipetation.
Sakandar Rahman
Usually Fe3O4 nano particles are produced with oleic acid as a stabilizer. There are many such articles. This synthesis was often discussed in the RG.
Fatty and organic acids are often used as stabilizer agents during NPs funcionalization. If you want to separate them use magnetic decantation for easy capturing and handling.
You can look up a lot of research papers. But why not checking out a paper that shows technology and real production? --> Besenhard et al. 2020:
https://doi.org/10.1016/j.cej.2020.125740
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