Contribution à l’étude des systèmes nanostructurés CeO2, Au et Au/CeO2

Abstract : Nanomaterials are more and more used in various situations, such as catalysis,color, optics, etc. To optimize their use, it is necessary to better understand reactions andinteractions taking place at these scales. This PhD thesis aims at exploring the links betweensynthesis conditions, particle morphology and their properties. In particular, we chose a tostudy a model-material: cerium (IV) oxide. CeO2 nanoparticles have been obtained bymicrowave-heating assisted solvothermal synthesis. Morphologies obtained and studied havebeen: cubes, octahedrons and rods. We tried to to give an explanation on how these synthesesallowed the formation of such morphologies. Gold has then be deposed on the surface of theseCeO2 nanoparticles, and studied by a combination of Transmission Electron Microscopystudies, and computer modelizations.
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Uli Castanet. Contribution à l’étude des systèmes nanostructurés CeO2, Au et Au/CeO2. Matériaux. Université de Bordeaux, 2017. Français. ⟨NNT : 2017BORD0600⟩. ⟨tel-02181990⟩

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