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In situ synthesis of MgWO4–GO nanocomposites and their catalytic effect on the thermal decomposition of HMX, RDX and AP

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2020, 30(4), pp.425-434
  • DOI : 10.1007/s42823-019-00112-1
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 8, 2019
  • Accepted : November 15, 2019
  • Published : August 1, 2020

Wang Jingjing 1 Wang Weimin 1 Wang Jinghua 1 Xu Kangzhen 1

1Northwest University

Accredited

ABSTRACT

For solving phase separation of nanoparticles and graphene oxide (GO) in the application process, MgWO4–GO nanocom�posites were successfully synthesized using three diferent dispersants via a facile solvothermal-assisted in situ synthesis method. The structure and morphology of the prepared samples were characterized by X-ray difraction, Scanning electron microscopy, Transmission electron microscopy, Fourier transform infrared and Raman techniques. The experimental results show that MgWO4 nanoparticles are tightly anchored on the surfaces of GO sheets and the agglomeration of MgWO4 nano�particles is signifcantly weakened. Additionally, MgWO4–GO nanocomposites are more stable than self-assembly MgWO4/ GO, which there is no separation of MgWO4 nanoparticles and GO sheets by ultrasound after 10 min. The catalytic results show that, compared with bare MgWO4, MgWO4–GO nanocomposites present better catalytic activities on the thermal decomposition of cyclotetramethylenete tranitramine (HMX), cyclotrimethylene trinitramine (RDX) and ammonium per�chlorate (AP). The enhanced catalytic activity is mainly attributed to the synergistic efect of MgWO4 nanoparticles and GO. MgWO4–GO prepared using urea as the dispersant has the smallest diameter and possesses the best catalytic action among the three MgWO4–GO nanocomposites, which make the decomposition temperature of HMX, RDX and AP reduce by 10.71, 11.09 and 66.6 °C, respectively, and the apparent activation energy of RDX decrease by 68.6 kJ mol−1

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Total Citation Counts(KCI+WOS) (18) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (29) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2023-10-01)

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