Two-dimensional titanium carbide (Ti3C2) MXene towards enhancing thermal catalysis decomposition of dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50).

In this study, we demonstrated that two-dimensional (2D) MXene materials (Ti3C2) were creatively introduced into the thermal catalysis fields of high energy density salts dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) and Ti3C2 MXene materials play a significant catalytic role in the thermal decomposition of TKX-50. Scanning electron microscopy, X-ray diffraction, and transmission electron microscopy were used to characterize the morphology and structure of the Ti3C2 MXene nanosheets. Differential scanning calorimetry was used to evaluate the thermal decomposition properties of pure TKX-50 with and without 2D Ti3C2 added. The results showed that with adding 5 wt% MXene, the peak temperature of TKX-50 was reduced from 250.5 to 233.3 °C, which is a reduction of 17.2 °C. The reaction heat release increased from 2197 to 2907 J g−1, which is an increase of 710 J g−1. The Ea was decreased by 44.8 kJ mol−1, from 220.0 to 175.2 kJ mol−1. Moreover, a synergistic catalytic mechanism for the thermal decomposition of TKX-50 was proposed. [ABSTRACT FROM AUTHOR]