Zirconia nanopowder synthesis via detonation of trinitrotoluene

Pierre Gibot (1) , Loic Vidal (2) , Lydia Laffont (3) , Julien Mory (4)

1 NS3E - Nanomatériaux pour les Systèmes Sous Sollicitations Extrêmes
2 IS2M - Institut de Science des Matériaux de Mulhouse
3 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux
4 ISL - Institut franco-allemand de recherches de Saint-Louis

Zirconium (IV) oxide nanopowder was successfully synthesized through the detonation of a mixture composed of 2,4,6 trinitrotoluene (TNT, C7H5N3O6) and zirconium sulfate tetrahydrate (Zr(SO4)2·4H2O) as the energetic material and ceramic precursor, respectively. TNT, one of the most popular explosives, is a secondary energetic molecule and exhibits high stability and low sensitivity toward external stresses, making its handling safe. After detonation of the energetic material/ceramic precursor mixture and purification of the detonation soot, a crystallized zirconium oxide (ZrO2) powder composed of nanosized particles with a spherical morphology was produced and analysed by the usual characterization techniques (X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and nitrogen physisorption). The reaction mechanism, considering the thermochemical aspect of the explosive, is offered. This approach could provide promising opportunities for the synthesis of various nano-sized oxide ceramic powders.

Mots clés: Powders; Detonation synthesis; ZrO2; Transition metal oxides; Nanoparticles

Domaines: Matériaux

Pierre Gibot, Loic Vidal, Lydia Laffont, Julien Mory. Zirconia nanopowder synthesis via detonation of trinitrotoluene. Ceramics International, 2020, 46 (17), pp.27057-27062. ⟨10.1016/j.ceramint.2020.07.182⟩. ⟨hal-03033101⟩