In order to study the application of detonation synthesis method in preparing nanoscale ceria(CeO2), ceria powder was
synthesized by detonation method. The synthesis experiment was carried out in explosion containment vessel by
initiating the emulsion explosive in which Ce(NO3)3·6H2O acted as the main oxidant. The phase composition, crystal
form, appearance and microstructure of the as-synthesized products were characterized by X-ray diffraction(XRD) and
Transmission Electron Microscope(TEM). The result from XRD test indicated that the nanoscale ceria belonged to cubic
phase. The mean size of ceria grain was 26nm based on the calculation result according to Scherrer equation. The result
from TEM test presented that the as-synthesized ceria grain was spherical by appearance, and the size was uniform.
According to TEM test result, the mean size of ceria grain was between 20nm and 30nm, which coincided with
calculation result perfectly.
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