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 (Ti 3 C 2 ) were creatively introduced into the thermal catalysis fields of high energy density salts dihydroxylammonium 5,5′-bistetrazole-1,1′-diolate (TKX-50) and Ti 3 C 2 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 Ti 3 C 2 MXene nanosheets. Differential scanning calorimetry was used to evaluate the thermal decomposition properties of pure TKX-50 with and without 2D Ti 3 C 2 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 E a 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.