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<p>In order to deal with the high thermal decomposition temperature of molecular perovskite energetic material (H<sub>2</sub>dabco)[NH<sub>4</sub>(ClO4)<sub>3</sub>] (DAP-4), DAP-4/GO composites were prepared using GO as a catalyst. These samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) to analyze morphology, structure, and thermal properties. The ignition and combustion processes were recorded using high-speed imaging, and the enthalpy of combustion was measured via oxygen bomb calorimetry. Results demonstrate that GO significantly reduces the thermal decomposition temperature of DAP-4 by 32.5&#xa0;°C and decreases its activation energy by 44.1&#xa0;kJ/mol. Combustion performance was markedly enhanced, combustion duration increased from 196 to 300&#xa0;ms, and the enthalpy of combustion increased by 945&#xa0;kJ/kg. Both DAP-4 and DAP-4/GO composites exhibited bright yellow flames. These findings confirm the effective catalytic role of GO in enhancing the thermal decomposition and combustion behavior of DAP-4.</p>

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The thermal catalytic effects of graphene oxide on the molecular perovskite energetic material (DAP-4)

  • 期刊论文

  • 发表日期：

    2025年12月24日

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  • Caoyu Lu,
  • Siyuan Wu,
  • Changjin Yuan,
  • Haozhe Qin,
  • Jiahe Wan,
  • Jun Zhang,
  • Ruihao Wang

摘要

In order to deal with the high thermal decomposition temperature of molecular perovskite energetic material (H2dabco)[NH4(ClO4)3] (DAP-4), DAP-4/GO composites were prepared using GO as a catalyst. These samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and differential scanning calorimetry (DSC) to analyze morphology, structure, and thermal properties. The ignition and combustion processes were recorded using high-speed imaging, and the enthalpy of combustion was measured via oxygen bomb calorimetry. Results demonstrate that GO significantly reduces the thermal decomposition temperature of DAP-4 by 32.5 °C and decreases its activation energy by 44.1 kJ/mol. Combustion performance was markedly enhanced, combustion duration increased from 196 to 300 ms, and the enthalpy of combustion increased by 945 kJ/kg. Both DAP-4 and DAP-4/GO composites exhibited bright yellow flames. These findings confirm the effective catalytic role of GO in enhancing the thermal decomposition and combustion behavior of DAP-4.