Reaction with chitosan based nanoparticles and KCl can be adsorption or absorption?

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Sergei Nikolaevich Shtykov Popular answer

If you see at Chitosan formulae you can see that it can exist in neutral amine form which can interact with d-metals through donor-acceptor interactions. It id difficult to wait this kind of interactions with KCL. The second form of chitosan is cationic through protonation of amine group. This form will not interact with potassium cation. The adsorption of sodium and potassium will be very weak at basic pH region.

Sergei Nikolaevich Shtykov

Muhammad Muqeet

but if you want to adsorb K, so you have to functionalize your nanoparticles by using any anionic reagent. so taht you would be able to adsorb K (Cations) at the surface of Nanoparticles.