A graphene oxide-MgWO4 nanocomposite as an efficient catalyst for the thermal decomposition of RDX, HMX

A GO-MgWO4 nanocomposite was prepared by a facile chemical method and characterized by XRD, IR, SEM, TEM, EDS and XPS. The catalytic action of nano-MgWO4, nano-GO, and the GO-MgWO4 (1 : 1) nanocomposite, GO-MgWO4 (1 : 3) nanocomposite, GO-MgWO4 (1 : 5) nanocomposite on the thermal decomposition of RDX and HMX were studied by DSC method. The results showed that the GO-MgWO4 (1 : 1), GO-MgWO4 (1 : 3) and GO-MgWO4 (1 : 5) nanocomposites exhibit better catalytic activity than their individual monocomponents. The GO-MgWO4 (1 : 5) nanocomposite possesses the best catalytic action among them. The decomposition temperature and the apparent activation of RDX were reduced by 28.7 degrees C and 43.4 kJ mol(-1), and the decomposition temperature and the apparent activation of HMX were reduced by 10.5 degrees C and 56.4 kJ mol(-1) in the presence of GO-MgWO4 (1 : 5), respectively.