The synthesis of high purity and crystalline CeO2 NPs by green
novel and environmental friendly procedd using the natural extractof H Sabdariffa as an effective chelating chemical agent was
demonstrated. A thermal annealing at 500 C during 2 h under
normal air conditions allows the obtention of highly crystallized
single phase CeO2 NPs as substantiated by HRTEM, EDS, XRD, ATRFTIR,
Raman and XPS investigations. The follow up study will
consist of identifying the mechanism and the dynamic of formation
of the CeO2 NPs during the interaction of the Cerium salt precursor
and the H Sabdariffa extracts compounds. More specifically, the
bioactive compounds would be identified. In addition, the synthesis
of less stable oxides such as semi-metallic and metallic CeO2 NPs is
being investigated.