I'm using an ultrasonic water bath to help disperse and dissolve the nanoparticles inside the deionized water, but I don't find the method feasible
Mona Soliman Alwahibi Sonication won't work. If you dissolve the system then you have no particles - just a solution. I think you mean disperse... Keep the system in the wet to preserve the nano nature. See:
https://www.researchgate.net/post/How_do_I_separate_Silver_nanoparticles_from_a_solution
2 quotes from those much greater than I:
'I think dry nanotechnology is probably a dead-end' Rudy Rucker Transhumanity Magazine (August 2002)
‘If the particles are agglomerated and sub-micron it may be impossible to adequately disperse the particles……‘The energy barrier to redispersion is greater if the particles have been dried. Therefore the primary particles must remain dispersed in water….’ J H Adair, E. Suvaci, J Sindel, “Surface and Colloid Chemistry” Encyclopedia of materials: Science and Technology pp 8996 - 9006 Elsevier Science Ltd. 2001 ISBN 0-08-0431526
Also (registration required):
Dispersion and nanotechnology
https://www.malvernpanalytical.com/en/learn/events-and-training/webinars/W190528DispNanoMat
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