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采用水热法制备了四氧化三钴@碳化蝶翅(Co_3O_4@CW)纳米复合材料。利用X射线衍射仪(XRD)、场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)、比表面及孔径分析仪表征了其结构和成分。采用同步热分析仪(DSC-TG)研究了该复合材料对高氯酸铵(AP)热分解的催化性能。结果表明,Co_3O_4@CW具有微孔-介孔-大孔的多级孔结构,Co_3O_4纳米粒子均匀紧密地负载于碳化蝶翅的骨架上,其中Co_3O_4的负载量约为72.0%。Co_3O_4@CW可显著降低AP的高温分解峰温度,当Co_3O_4@CW的添加量为3%时,AP的高温分解峰提前147℃,AP的热分解放热量从173.4 k J·mol~(-1)增加到369.3 k J·mol~(-1),表现出了良好的催化性能。
Hydrothermal method was used to prepare tricobalt tetraoxide (Co_3O_4 @ CW) nanocomposites. The structure and composition were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), surface area and pore size analyzer. The catalytic performance of the composites for thermal decomposition of ammonium perchlorate (AP) was investigated by DSC-TG. The results show that Co_3O_4 @ CW has a multi-level pore structure with micropore-mesopore-macropore. Co_3O_4 nanoparticles are evenly and tightly supported on the skeleton of carbonated finoptera, in which the loading of Co_3O_4 is about 72.0%. Co_3O_4 @ CW significantly decreased the peak temperature of pyrolysis of AP. When the amount of Co_3O_4 @ CW added was 3%, the peak temperature of AP was 147 ℃, and the pyrolysis heat of AP decreased from 173.4 kJ · mol -1 ) To 369.3 kJ · mol -1, showing good catalytic performance.