Bryk P, Rzysko W, Malijevsky A, Sokołowski S. Capillary condensation in pores with rough walls: A density functional approach.
J Colloid Interface Sci 2007;
313:41-52. [PMID:
17531246 DOI:
10.1016/j.jcis.2007.03.077]
[Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2007] [Revised: 03/25/2007] [Accepted: 03/27/2007] [Indexed: 12/01/2022]
Abstract
The effect of surface roughness of slit-like pore walls on the capillary condensation of a spherical particles and short chains is studied. The gas molecules interact with the substrate by a Lennard-Jones (9,3) potential. The rough layer at each pore wall has a variable thickness and density and consists of a disordered quenched matrix of spherical particles. The system is described in the framework of a density functional approach and using computer simulations. The contribution due to attractive van der Waals interactions between adsorbate molecules is described by using first-order mean spherical approximation and mean-field approximation.
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