花状MoS_2/C微球的制备及其对高氯酸铵热分解催化性能的研究

Preparation of Flower-like MoS_2/C Microspheres and Their Catalytic Property on the Thermal Decomposition of Ammonium Perchlorate

以钼酸钠和硫脲为前驱体,利用单分散密胺树脂作为模板和碳源,水热法包覆花状MoS_2纳米片,惰性气氛焙烧碳化后制得花状MoS_2/C微球。利用扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)、X射线光电子能谱分析(XPS)等对所得样品进行了表征,并用差热分析考察了不同添加量的花状MoS_2/C微球对高氯酸铵(AP)热分解过程的影响。表征结果所制备的花状MoS_2/C微球是由多层纳米片交叉构成的中空结构,尺寸1～1.5μm,单分散性较好。热分析结果表明,MoS_2/C微球的加入能强烈催化高氯酸铵的热分解,添加4%质量分数的MoS_2/C微球能显著降低高氯酸铵的高温分解温度。

Flower - like MoS2 / C microspheres were synthesizedusing MF microspheres as template by ahydrothermal method followed by calcination under inert atmosphere. The sample was characterized by SEM, TEM,XRD,and XPS spectra. The catalytic property of the sample on the thermal decomposition of ammonium perchlorate（AP）was further investigated by DTA. The results indicated that the sample with large specific surface exhibited aunique hollow structure composed of layered nanosheets and had an average size of 1 ~ 1. 5 μm. The DTA datashowed that the MoS2 / C microspheres greatly enhanced the thermal decomposition process of AP. When 4 wt% ofMoS2 / C was mixed in AP, the high thermal decomposition temperature of AP could be lowered.