Characteristics of carbon encapsulated copper nanoparticles based on gaseous/condensed explosives detonation

In order to compare the properties of nanoparticles synthesized from gaseous detonation and condensed explosives detonation, we carried out the investigation utilizing XRD, Raman and TEM methods. Condensed explosives detonation used cupric citrate xerogel as material, and detonated in the protection of nitrogen atmosphere; gaseous detonation used acetylacetone copper as material, detonated under the negative oxygen conditions with the explosion sources of H2 and O2, H2 and air. The results of XRD, Raman and TEM analyses show that the carbon encapsulated copper nanoparticles with good dispersibility can be obtained by both two detonation methods, and the degree of graphitization of carbon shell is high. Gaseous detonation can synthesize nanocrystals below 10 nm, and the size of nanocrystals by condensed explosives detonation is between 20-40 nm, and there are more empty shells. The gaseous detonation product has a carbon shell size between 2 and 3 nm, and the condensed explosive detonation product has a carbon shell size between 2 and 5 nm.