 |
 |
Article dans une revue
Synthesis of hafnium germanate (HfGeO4) particles: Impact of crystallization route on X/UV conversion properties
Abstract : The crystallization route - calcination or hydrothermal ripening - of an amorphous hafnium and germanium oxide coprecipitate determines the X/UV conversion properties of the resulting hafnium germanate (HfGeO4). The calcination of the amorphous precipitate leads to micrometric aggregated particles exhibiting strong X/UV conversion whereas its hydrothermal crystallization resulted in well individualized nanoparticles with no X/UV conversion property. To explain these phenomena, the crystalline structure and chemical composition of the final products were investigated with X-ray diffraction (XRD) and inductively coupled plasma-mass spectrometry (ICP-MS). The key result is that germanium is partially solubilized from the amorphous precursor in hydrothermal conditions, resulting in the crystallization of a Ge deficient hafnium germanate possessing no X/UV conversion properties.
https://hal-mines-paristech.archives-ouvertes.fr/hal-00795386
Contributeur : Bibliothèque Mines Paristech <>
Soumis le : jeudi 28 février 2013 - 09:12:10
Dernière modification le : mercredi 14 octobre 2020 - 03:47:46
Contributeur : Bibliothèque Mines Paristech <>
Soumis le : jeudi 28 février 2013 - 09:12:10
Dernière modification le : mercredi 14 octobre 2020 - 03:47:46