Is there any method to neutralization of the acid solutions (HNO3, H2SO4, 1:3) after the functonalization process of MWCNTs, which does not affect the nanotube?
Siamak Hashemipour
after separation CNT wash it with NaOH solution ( .1 M ) and then with DI water.
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Błażej Scheibe
It is easier to use centrifugation or filtration methods.
In case of NaOH, all humic acids and oxidized carbon impurities will be detached from MWCNTs surface which is additional purification effect. However, oxygen functionalities have to be regenerated via 0.1M HCl treatment.
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Katarzyna Dunst
I have a problem because after filtration nanotubes agglomerate during drying process
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Natheer Algadri
You can wash by water
Add water and wait minimum 5hours after that pump the water and add another time
As that 3 times
Dry at 70 C 24 hours
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