Hi everyone!
I would like to disperse 10 nm diamond powder (Sigma-Aldrich) in deionized water without any dispersant. Is that possible? If not, I could allow for some dispersant, but which one?
Thanks in advance!
Jefferson
It's not easy, as most of the powder is strongly agglomerated and primary particles are bonded. One of the techniques (salt assisted milling) is described in the attached paper.
See also our review in Nature Nano: V. Mochalin, O. Shenderova, D. Ho, Y. Gogotsi, The properties and applications of nanodiamonds, Nature Nanotechnology, 7 (1) 11-23 (2012) You can download my papers directly from my website: http://nano.materials.drexel.edu/publications/
Password for PDF files is: nmg
Have you considered surface activation with argon plasma? It usually works well for dispersion of the other carbon allotropes in water, such as graphene and nanotubes.
You can use of iodine in order to dispersing the nano-particles in polar solutions like water and acetone. We used 0.01 gr of iodine for dispersing about 0.3 gr graphene in acetone.
It's not easy, as most of the powder is strongly agglomerated and primary particles are bonded. One of the techniques (salt assisted milling) is described in the attached paper.
See also our review in Nature Nano: V. Mochalin, O. Shenderova, D. Ho, Y. Gogotsi, The properties and applications of nanodiamonds, Nature Nanotechnology, 7 (1) 11-23 (2012) You can download my papers directly from my website: http://nano.materials.drexel.edu/publications/
Password for PDF files is: nmg
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