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Dominguez H, Pizio O, Pusztai L, Sokolowski S. The Structural Properties and Diffusion of a Three-Dimensional Isotropic Core-Softened Model Fluid in Disordered Porous Media. Molecular Dynamics Simulation. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/0263-6174.25.7.479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The microscopic structure and dynamic properties of an isotropic three-dimensional core-softened model fluid in disordered matrices of Lennard-Jones particles have been studied. Molecular dynamics computer simulations in Grand Canonical ensemble were used as the methodological tools. It was shown that the microscopic structure of the fluid is characterized by anomalies similar to those found in a bulk model, but that it is affected by the fluid-matrix interactions. The dynamic properties also exhibit anomalous dependence on fluid density, but the magnitude of these anomalies is suppressed in comparison to the bulk fluid model. The anomalous behaviour of the diffusion coefficient is attributed to structural changes in the first coordination shell of a given fluid particle. It seems that the anomalies can only be suppressed at matrix densities which are higher than those studied in the present work.
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Affiliation(s)
- Hector Dominguez
- Instituto de Investigaciones en Materiales, UNAM, Coyoacan 04510, Mexico, D.F
| | - Orest Pizio
- Instituto de Quimica de la UNAM, Coyoacan 04510, Mexico, D.F
| | - Laszlo Pusztai
- Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, Budapest, H-1121, Hungary
| | - Stefan Sokolowski
- Department for the Modelling of Physico-Chemical Processes, Maria Curie-Skłodowska University, Lublin 20031, Poland
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Feng H, Gao W, Sun Z, Chen L, Lüdemann HD, Lei B, Li G. The self-diffusion and hydrogen bond interaction in neat liquid alkanols: a molecular dynamic simulation study. MOLECULAR SIMULATION 2013. [DOI: 10.1080/08927022.2013.841906] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Rajabbeigi N, Elyassi B, Tsotsis TT, Sahimi M. Molecular pore-network model for nanoporous materials. I: Application to adsorption in silicon-carbide membranes. J Memb Sci 2009. [DOI: 10.1016/j.memsci.2009.02.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Srebnik S, Sheintuch M. Diffusion enhancement in composites of nanotubes and porous structures. MOLECULAR SIMULATION 2009. [DOI: 10.1080/08927020802403858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Jardat M, Hribar-Lee B, Vlachy V. Self-diffusion coefficients of ions in the presence of charged obstacles. Phys Chem Chem Phys 2008; 10:449-57. [DOI: 10.1039/b711814g] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Salinas JF, Dominguez H. Studies of diffusion coefficients in disordered porous matrices confined in a slit-pore. Mol Phys 2007. [DOI: 10.1080/00268970701367956] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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RIVERA MARGARITA, DOMINGUEZ HECTOR. Pore matrices prepared at supercritical temperature by computer simulations: matrix characterization and studies of diffusion coefficients of adsorbed fluids. Mol Phys 2003. [DOI: 10.1080/00268970310001606812] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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DOMINGUEZ H, PATRYKIEJEW A, SOKOŁOWSKI S. Molecular dynamics study of the formation of small crystallites of Lennard-Jones particles in slit-like pores with (100) fcc walls. Mol Phys 2003. [DOI: 10.1080/0026897031000112433] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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