How to prevent the aggregation of positively charged nanoparticles in the aqueous environment?

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John Francis Miller

Two questions:

1. How do you know they are positively charged?

2. What is the composition of the aqueous environment that they are in (e.g., salt concentration)

Marzieh Attar

1. I measured the value of zeta potential

2.The aqueous medium contained one fifth of PBS and the rest was water

The concentration of PBS may be high enough to cause aggregation.