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Elaboration et caractérisation de matrices hydroxydes doubles lamellaires macroporeuses

Abstract : In this work, the structuring phase HDL in macroporous matrices was performed by using an ordered arrangement of spheres as sacrificial imprint. HDL phases are obtained by precipitating metal salts adsorbed on the surface of beads PS ordered in the presence of sodium hydroxide. A 3D porous network is finally obtained either by calcination or dissolution of the impression. These HDL macroporous matrices retain their intercalation properties and composition of their wealth. Ordered macroporosity is maintained during thermal decomposition of the oxide phase HDL. This macroporosity present in HDL phases can improve the adsorption, evaluated on the Orange II, and photodegradation of a pesticide by anions décatungstate immobilized. From these matrices macroporous carbons with hierarchical porosity have been developed
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Submitted on : Wednesday, July 11, 2012 - 1:18:56 PM
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  • HAL Id : tel-00716798, version 1


Erwan Géraud. Elaboration et caractérisation de matrices hydroxydes doubles lamellaires macroporeuses. Chimie analytique. Université Blaise Pascal - Clermont-Ferrand II, 2006. Français. ⟨tel-00716798⟩



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