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Article Dans Une Revue Soft Matter Année : 2017

Transport and adsorption under liquid flow: the role of pore geometry

Résumé

We study here the interplay between transport and adsorption in porous systems with complex geometries under a fluid flow. Using a Lattice Boltzmann scheme extended to take into account adsorption at solid/fluid interfaces, we investigate the influence of pore geometry and internal surface roughness on the efficiency of fluid flow and the adsorption of molecular species inside the pore space. We show how the occurrence of roughness on pore walls acts effectively as a modification of the solid/fluid boundary conditions, introducing slippage at the interface. We then compare three common pore geometries, namely honeycomb pores, inverse opal, and materials produced by spinodal decomposition. Finally, we quantify the influence of those three geometries on fluid transport and tracer adsorption. This opens perspectives for the optimization of materials geometries for applications in dynamic adsorption under fluid flow.

Domaines

Matériaux
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Dates et versions

hal-01685666 , version 1 (24-04-2019)

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Jean-Mathieu Vanson, Anne Boutin, Michaela Klotz, François-Xavier Coudert. Transport and adsorption under liquid flow: the role of pore geometry. Soft Matter, 2017, 13 (4), pp.875 - 885. ⟨10.1039/C6SM02414A⟩. ⟨hal-01685666⟩
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