Clémentine MANSAS (LNER) will defend her Ph.D. dissertation entitled "Synthesis of core-shell nanoparticles to entrap radioactive cesium" on Thursday, November 23, 2017 at 2.00 pm (ICSM Auditorium).
Abstract: The research work is based on the synthesis and the study of core-shell nanoparticles able to entrap radioactive cesium. A sorption process of radionuclides on porous silica monoliths has already been described to capture radioactive cesium and to anchor it on a solid phase. Those materials were therefore functionalized with Prussian Blue Analogous (PBA) nanoparticles or more precisely K2CuFe(CN)6 (CuPBA) that are well known to be highly selective towards Cs. However, those materials did not allow optimal Cs sorption because of strong aggregation of PBA nanoparticles within the monoliths. Thereby, the solution developed is the use of core-shell nanoparticles in order to avoid the PBA aggregation. The core of these nanoparticles is made with PBA and protected by a porous silica shell.
