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首页> 外文会议>International Seminar on Aerospace Science and Technology >Co_3O_4 Nanoparticles: Facile Preparation, Characterization and Their Catalytic Activity towards Thermal Decomposition of Ammonium Perchlorate
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Co_3O_4 Nanoparticles: Facile Preparation, Characterization and Their Catalytic Activity towards Thermal Decomposition of Ammonium Perchlorate

机译：CO_3O_4纳米粒子：容易制备，表征及其促进高氯酸铵热分解的催化活性

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In this work, preparation, characterization, and catalytic activity of Co_3O_4 nanoparticles (NPs) are reported. Co_3O_4NPs was successfully prepared using Andrographys paniculata leaves extract (APE) as a weak base source and capping agent. Characterization was conducted using Fourier transform-infrared (FT-IR) spectroscopy, x-ray diffraction (XRD), energy dispersive x-ray (EDX), and transmission electron microscopy (TEM). According to FT-IR result, there were two main absorption peaks which corresponded to Co (II)-O and Co (III)-O bond at the wave number of 664.49 and 569.01 cm~(-1), respectively. XRD pattern confirmed that Co_3O_4 particles were theoretically hexagonal with nanocrystals form. EDX analysis revealed that Cobalt and Oxygen were the main atomic content on Co_3O_4. The formed Co_3O_4NPs has particle size of approximately 20 nm. The catalytic activity of Co_3O_4 NPs was tested towards thermal decomposition of ammonium perchlorate (AP) by measuring differential scanning calorimetry (DSC). The temperature decrease on thermal decomposition of AP was found to be 157 °C at temperature range of 463 and 306 °C with decreasing of activation energy from 60.43 to 36.28 kJ/mol.
机译：在这项工作中，报道了CO_3O_4纳米颗粒（NPS）的制备，表征和催化活性。使用Andrographys Paniculata叶子提取物（APE）作为弱基础源和覆盖剂成功制备CO_3O_4NP。使用傅里叶变换红外（FT-IR）光谱，X射线衍射（XRD），能量分散X射线（EDX）和透射电子显微镜（TEM）进行表征。根据FT-IR结果，有两个主要吸收峰值分别对应于CO（II）-O和CO（III）-O和CO（III）-O键，分别在664.49和569.01cm〜（-1）中。 XRD图案证实，CO_3O_4颗粒在理论上是六边形的纳米晶体形式。 EDX分析表明，钴和氧是CO_3O_4上的主要原子含量。形成的CO_3O_4nps具有约20nm的粒度。通过测量差示扫描量热法（DSC）来测试CO_3O_4NP的催化活性朝向高氯酸铵（AP）的热分解。在463和306℃的温度范围内发现AP的热分解的温度降低，激活能量从60.43至36.28kJ / mol的降低，为157℃。

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