Curvature Dependency of Fluid--Nanoparticle Interfacial Tension and a New Linear Regularity between Excess Adsorption and Interfacial Tension

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概要

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• The behavior of interfacial tension of fluids in contact with spherical nanoparticles with curvature has been investigated using density functional theory. We have shown that nanoparticle--fluid interactions have an important role in the behavior of interfacial tension. In fact for hard nanoparticle--fluid interactions, interfacial tension is positive and increases with curvature. But for systems with attractive nanoparticle--fluid interactions, it may be positive or negative and may increase or decrease with curvature depending on the nanoparticle--fluid interaction strength and thermodynamic state. These different behaviors have been interpreted by considering two contributions which determine the interfacial tensions. The first contribution is related to nanoparticle--fluid interactions and the second one arises from changes in the structure of fluid molecules because of the particulate. We have also found a new linear regularity between interfacial tensions and excess adsorptions at different nanoparticle sizes which is valid for all kind of nanoparticle--fluid and fluid--fluid interactions.

• 2011-04-15

著者

• Keshavarzi Ezat

  Department of Chemistry, Isfahan University of Technology, Isfahan 8415683111, Iran

• Keshavarzi Ezat(Tahmineh)

  Department of Chemistry, Isfahan University of Technology, Isfahan 8415683111, Iran

• Taghizadeh Ameneh

  Department of Chemistry, Isfahan University of Technology, Isfahan 8415683111, Iran

関連論文

• Curvature Dependency of Fluid--Nanoparticle Interfacial Tension and a New Linear Regularity between Excess Adsorption and Interfacial Tension

スポンサーリンク