Quantum hard spheres in a slit pore
کد مقاله : 1075-PHYSCHEM20
عباس حلمی کهنه شهری *
دانشگاه صنعتی اصفهان
چکیده مقاله:
In this paper, the density functional theory is employed to investigate the effects of quantum correction on the structure and such thermodynamic properties of quantum-mechanical hard sphere fluids confined in nano-slit pore as excess adsorption and wall pressure. It is found that the repulsion between hard sphere molecules because of quantum effect play an important role in determining the structure and thermodynamic properties of the confined fluid. Another finding of the present study involves the key role of the excluded volume in determining the structure and thermodynamic properties of quantum mechanical hard sphere fluids. By increasing of the quantum effect, λ*, the periodic oscillation in the density profile becomes more obvious and the order of layers in the pore increases. Increasing the values of λ* is found to lead not only to drastic changes in the structure of the fluid molecules but also, to increased excess adsorption and wall pressure of the fluid confined in slit pores.
کلیدواژه ها:
Keywords: DFT; Semi-classical quantum fluid; Slit pore; Excess adsorption.
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