What are the Key Factors Affecting Electrostatic Stabilization?
pH of the Solution: The pH of the colloidal solution can significantly affect the charge on the nanoparticle surface. Adjusting the pH can optimize the zeta potential for better stabilization. Ionic Strength: The presence of ions in the solution can screen the electrostatic charges, reducing the repulsive forces. Therefore, lower ionic strength is generally preferred for better stabilization. Type of Electrolytes: Multivalent ions are more effective at screening charges than monovalent ions, which can lead to destabilization of the nanoparticles. Surface Functionalization: Chemical modification of the nanoparticle surface with charged groups can enhance stabilization by increasing the surface charge.
