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A Favorable Improvement in Reactivity between n-Al and Sheet-like Porous CuO as a Nanoenergetic Composite by Graphene Oxide Additives
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2020-06-29 , DOI: 10.1021/acs.iecr.0c02138
Yajie Chen 1 , Siyuan Xia 1, 2 , Wei Ren 3, 4 , Zilong Zheng 1 , Junhong Chen 1 , Kefeng Ma 1 , Chunpei Yu 1 , Xinli Zhou 1 , Wenchao Zhang 1
Affiliation  

In this paper, sheet-like porous CuO (p-CuO), which was prepared using a hydrothermal-annealing method, has been first selected as an oxidizer to prepare n-Al/p-CuO/GO nanoenergetic composites. The n-Al/p-CuO/GO nanoenergetic materials were fabricated by means of vacuum-assisted self-assembly. Moreover, the effect from the quantity of added GO was studied on the morphology and reaction performance of the n-Al/p-CuO/GO nanoenergetic composites. The characterizations show that the resulting n-Al/p-CuO/GO composites have a uniform distribution of reaction components for an improved reactivity. The total heat release of the composite energetic material gradually rises up to 2306.7 J/g with the increasing GO content till 5 wt % but decreases as the GO content continues going up. Most importantly, the maximum value of the reaction exothermic heat is approximately 2.2 times higher in value than that of the as-prepared composite without GO addition. It is found out that the n-Al/p-CuO/GO nanothermite with 5 wt % GO can be successfully ignited by a semiconductor bridge at a 1 A current to produce a big and bright flame, thus indicating that its combustion performance is excellent. Therefore, the new nanoenergetic composites from a combination of GO and n-Al/p-CuO have a bright application prospect in the field of energetic materials.

中文翻译:

石墨烯氧化物添加剂可很好地改善n-Al和片状多孔CuO作为纳米高能复合材料之间的反应性

在本文中,首先选择了使用水热退火法制备的片状多孔CuO(p-CuO)作为氧化剂制备n-Al / p-CuO / GO纳米高能复合材料。通过真空辅助自组装制备了n-Al / p-CuO / GO纳米高能材料。此外,研究了GO的添加量对n-Al / p-CuO / GO纳米高能复合材料的形貌和反应性能的影响。这些特征表明,所得的n-Al / p-CuO / GO复合材料具有均匀的反应组分分布,从而提高了反应性。随着GO含量的增加直至5wt%,复合含能材料的总热释放逐渐增加至2306.7J / g,但是随着GO含量的持续增加而降低。最重要的是,反应放热的最大值大约是不加GO的合成复合物的2.2倍。已发现,GO含量为5 wt%的n-Al / p-CuO / GO纳米热矿可以在1 A电流下被半导体桥成功点燃,产生大而明亮的火焰,从而表明其燃烧性能极好。 。因此,由GO和n-Al / p-CuO组合而成的新型纳米高能复合材料在高能材料领域具有广阔的应用前景。因此表明其燃烧性能极好。因此,由GO和n-Al / p-CuO组合而成的新型纳米高能复合材料在高能材料领域具有广阔的应用前景。因此表明其燃烧性能极好。因此,由GO和n-Al / p-CuO组合而成的新型纳米高能复合材料在高能材料领域具有广阔的应用前景。
更新日期:2020-07-22
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