Article

Charge inversion of colloidal particles in an aqueous solution: screening by multivalent ions.

Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan.
Physical Review E (impact factor: 2.26). 05/2001; 63(4 Pt 1):041401. pp.041401
Source: PubMed

ABSTRACT We investigate the structure of the electric double layer on charged colloids by Monte Carlo simulations. Using the primitive model of asymmetric electrolytes, the integrated charge distribution function on a spherical colloidal particle are also studied. With high concentrations of divalent ions, numerical results predict charge oscillation and charge inversion phenomena, which the traditional Derjaguin-Landau-Verwey-Overbeek theory cannot reproduce.

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Keywords

asymmetric electrolytes
 
charge inversion phenomena
 
charge oscillation
 
colloids
 
electric double layer
 
integrated charge distribution function
 
Monte Carlo simulations
 
traditional Derjaguin-Landau-Verwey-Overbeek theory
 

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