Due to their long range, charge effects can be quite important in nanoparticle and colloidal systems. Surface charge on the particle is typically discussed in terms of zeta potential; the potential at the shear plane. Determining the effect of suspension properties, such as dissolved acids, bases, or other ions, on zeta potential allows deliberate design of suspensions and is a critical tool to manipulating nanoparticle behavior. In other words, suspension stability can be effectively manipulated for our benefit.
We discuss:
- What is zeta potential
- Determining zeta potential
- Using zeta potential to predict formulation stability
- Using zeta potential to cost-effectively flocculate particles in waste