科研之友
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摘要
Based on density functional theory and Yvon-Born-Green equation, the expression for depletion potential was derived. The depletion potential and adsorption stability were calculated and investigated via density functional theory for the colloidal particles immersed in the solvent mixture, which was confined by a single wall and in slit pore. The results showed that the volume fraction and the size ratio of the solvents influence significantly the depletion potential in its strength, range and oscillation period. Moreover, the adsorption stability of the colloidal particle at the wall related closely to the volume fraction and size ratio of the solvents. In addition, for the colloidal suspension confined in slit pore, the depletion potential. well of a colloidal particle might show oscillation as the size ratio and the pore width were modulated.
