INFRARED SPECTROMETRY OF MODIFIED DETONATION NANODIAMONDS

Abstract

The article analyzes the infrared spectra (IR spectra) of detonation nanodiamonds (DND) obtained from various explosives: from an alloy of TNT and RDX; tetryl; tetryl with RDX and a ternary mixture: a mixture of TNT, RDX and tetryl. The resulting DNDs were treated: with aqueous ammonia at 220 °C at 40 atm, in a gaseous medium (air and argon) at 430 °C. It was shown that high-temperature treatment of various DNDs leads to an identical result: all nanodiamond samples, regardless of the initial explosive and the nature of the modification, have strong absorption bands of nitrogen impurity centers (826, ~1100, 1255, 1328, 1558 cm –1). In addition, all samples have pronounced absorption bands of adsorbed water (1625–1637 cm–1), carbonyl group (1742–1790 cm–1), stretching vibrations of the Csp3–H group (2853–2958 cm–1), and stretching vibrations of the OH group (3330 – 3397 cm–1).