Elaboration et caractérisation de matrices hydroxydes doubles lamellaires macroporeuses
Year: 2006
Type: dissertation
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
Author: Erwan Géraud
Institution: Institut de Chimie de Clermont-Ferrand
Language: French
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W115292602