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Contribution à l'étude de l'adsorption physique de gaz sur les nanotubes de carbone mono- et multiparois

Abstract : This work is devoted to study of the adsorption of simple gases (Kr, Xe and CCl4) on single-wall and on multi-wall carbon nanotubes. Based on comparison of isotherms and heats of adsorption on nanotubes with those on planar graphite, we first determined the adsorptive sites and the influence of the nanotube curvature. We studied the effect of two nanotube opening techniques on their adsorptive properties and capacities. Comparison of the isotherms before and after mechanical opening of single-wall nanotubes allowed us to estimate the fraction of internal accessible surface and to evaluate the fraction of impurities introduced upon opening. We showed that the three gases should have different arrangements inside the tubes according to their diameter. Study of Kr adsorption on multi-wall nanotubes before and after opening using oxidation allowed determining the efficiency and influence of such treatment on the surface properties of the nanotubes as well as the oxidation mechanism.
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https://hal.univ-lorraine.fr/tel-01747687
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Moulay-Rachid Babaa. Contribution à l'étude de l'adsorption physique de gaz sur les nanotubes de carbone mono- et multiparois. Autre [cond-mat.other]. Université Henri Poincaré - Nancy 1, 2004. Français. ⟨NNT : 2004NAN10239⟩. ⟨tel-01747687⟩

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