High-resolution Raman Spectroscopy for the Nanostructural Characterization of Explosive Nanodiamond Precursors.
Chemphyschem
; 18(2): 175-178, 2017 Jan 18.
Article
em En
| MEDLINE
| ID: mdl-27869349
ABSTRACT
The specific attributes of nanodiamonds have attracted increasing interest for electronics or biomedical applications. An efficient synthetic route towards nanodiamonds is via detonation of hexolite (i.e. a mixture of TNT [2,4,6-trinitrotoluene] and RDX [1,3,5-trinitro-1,3,5-triazine]). In particular, detonation of hexolite crystallized by spray flash evaporation (SFE) yields extremely small diamonds (<4â
nm). To unravel the detonation mechanism, a structural characterization of the explosives is required but is challenging due to their thermal instability. We demonstrate a combination of conventional Raman spectroscopy and tip-enhanced Raman spectroscopy (TERS) for resolving morphological and structural differences of differently prepared hexolite nanocomposites. The experiments allow for the first time a structural differentiation of individual TNT and RDX crystals and 15-20â
nm sized core-shell structures, consequently providing a general approach to investigate the actual composition of mixtures on the nanometer scale.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Triazinas
/
Trinitrotolueno
/
Nanoestruturas
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article