Etudes électroanalytiques de processus de transfert de matière et de charge au sein de silices mésoporeuses organiquement modifiées

Abstract : The first part of this study deals with the interactions between Hg(II) and mesoporous silicas displaying an organized structure and functionalized by thiol groups. The influence of the structure type (hexagonal or cubic), the way of functionalization (in situ co-condensation or post-synthesis grafting), the functionalization level and the pore size on the sorption capacities and Hg(II) transport rates were examined. The use of various composition media allows the development of some environmental applications, in solid-liquid extraction for instance, or in new amperometric sensors for Hg(II). In a second part, the electrochemical behaviour of mesoporous silicas functionalized by ferrocene groups was studied. The electron transfer reactions inside such systems imply probably a mechanism by electron hopping.
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Cyril Delacôte. Etudes électroanalytiques de processus de transfert de matière et de charge au sein de silices mésoporeuses organiquement modifiées. Autre. Université Henri Poincaré - Nancy 1, 2005. Français. ⟨NNT : 2005NAN10147⟩. ⟨tel-01748081⟩

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