Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece.
Physics Department, University of Ioannina, 45110 Ioannina, Greece.
Molecules. 2020 May 8;25(9):2207. doi: 10.3390/molecules25092207.
Recently we have highlighted the importance of hypergolic reactions in carbon materials synthesis. In an effort to expand this topic with additional new paradigms, herein we present novel preparations of carbon nanomaterials, such-like carbon nanosheets and fullerols (hydroxylated fullerenes), through spontaneous ignition of coffee-sodium peroxide (NaO) and C-NaO hypergolic mixtures, respectively. In these cases, coffee and fullerenes played the role of the combustible fuel, whereas sodium peroxide the role of the strong oxidizer (e.g., source of highly concentrated HO). The involved reactions are both thermodynamically and kinetically favoured, thus allowing rapid product formation at ambient conditions. In addition, we provide tips on how to exploit the released energy of such highly exothermic reactions in the generation of useful work.
最近,我们强调了在碳材料合成中使用自燃反应的重要性。为了用新的范例拓展这一主题,我们分别通过咖啡-过氧碳酸钠(NaO)和 C-NaO 自燃混合物的自发点火,实现了碳纳米材料(如碳纳米片和富勒醇(羟基化富勒烯))的新型制备。在这些情况下,咖啡和富勒烯充当了可燃燃料的角色,而过氧化钠则充当了强氧化剂(例如,高浓度 HO 的来源)的角色。所涉及的反应在热力学和动力学上都有利,因此可以在环境条件下快速生成产物。此外,我们还提供了一些技巧,介绍如何利用这种高度放热反应释放的能量来产生有用的功。