Adsorption of Tetryl on the Surface of B12N12: A Comprehensive DFT Study

Abstract

In this study, the adsorption of tetryl on the surface of boron nitride cage was evaluated by density functional theory. For this purpose, the structures of tetryl, B₁₂N₁₂, and the tetryl-B₁₂N₁₂ complexes were geometrically optimized. Then, IR and frontier molecular orbital calculations were performed on them. The calculated adsorption energies, Gibbs free energy changes (ΔG_ad), adsorption enthalpy changes (ΔH_ad) and thermodynamic equilibrium constants (K_th) revealed that the adsorption process of both explosives is experimentally feasible, spontaneous, exothermic and non-equilibrium. The specific heat capacity values (C_V) showed that the heat sensitivity has been significantly reduced in the tetryl complexes with B₁₂N₁₂. The N-O and C-N bond lengths and the density values demonstrated that tetryl-derived products with boron nitride cage have higher explosive velocity and blasting pressure in comparison to the pure blasting materials without B₁₂N₁₂. The frontier molecular orbital parameters such as band gap, chemical hardness, electrophilicity, chemical potential and charge capacity were also studied and the results proved that boron nitride cage is an ideal electroactive sensing material in order to fabricate novel sensors for the determination of tetryl.