Integration of nano-Al with one-step synthesis of MoC3 nanobelts to realize high exothermic nanothermite.

MoO₃ nanobelts were prepared by a one-step hydrothermal method and then assembled with aluminum nanoparticles using polyvinylpyrrolidone as a binder. The physicochemical properties of the as-prepared samples were carefully characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis/differential scanning calorimetry, and drop weight impact test. The results showed that the T_onset of Mo-Al-0, Mo-Al-1, Mo-Al-2, and Fe-Al-0 are 474.8°C, 484.2°C, 478.5°C, and 514.8°C, respectively, which are 66.0°C, 56.6°C, 62.3°C, and 26.0°C lower than that of pure Al-NPs (540.8°C). The total exothermic heat of selfassembled MoO₃/Al during DSC test is about 2626.9 J/g, which is 229.6, 420.8, and 11.1 J/g higher than that of Al/commercial MoO₃, Al/hydrothermal MoO₃, and Al/referenced Fe₂O₃. Furthermore, the high exothermic self-assembled MoO₃/Al thermite is totally insensitive to impact. [ABSTRACT FROM AUTHOR]