I tried water ethanol mix to suspend the TiO2 powder obtained from Sigma but I am never able to get particles around 21 nm as said in the product description of Sigma. Is it any other solution that I can use to suspend them?
Hello Motilal Mathesh, I assume that under conditions that work (pressure, temperature, current, voltage) create conditions for the production of TiO2. Try other pressures, working current or working voltages to avoid this effect. Perhaps it is also about destroying the target with TiO2? To give you precise judgment, would you give a little more data on the technology of receiving and under what conditions? What is the ultimate goal?
Regards Emil Yankov
Dear Motilal,
ultrasonic treatment of the suspension (up to 1 hour) may lead to a sufficient separation of the particles. Subsequent atomisation and drying of the suspension gives you a fine powder.
Dear Emil Hristov Yankov. Thanks for your reply. Below is the link to the material I have https://www.sigmaaldrich.com/catalog/product/aldrich/718467?lang=en®ion=NL
I am not sure about the conditions under which they have been produced, but I would like to suspend this nanoparticle into individual ones (21 nm) and not as clusters that I can encapsulate inside a shell and use as motor applications.
Torben Fiedler Thanks for your reply. I have tried that but looks like they do not seperate out and still in clusters. I have tried with water and also water/ethanol (1:1 ratio) with concentration of 1 mg/ml.
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