Hierarchical MnO2/SnO2 Heterostructures for a Novel Free-Standing Ternary Thermite Membrane

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• 作者：Yong Yang ; Zhi-Cheng Zhang ; Peng-Peng Wang ; Jing-Chao Zhang ; Farhat Nosheen ; Jing Zhuang ; Xun Wang
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：August 19, 2013
• 年：2013
• 卷：52
• 期：16
• 页码：9449-9455
• 全文大小：480K
• 年卷期：v.52,no.16(August 19, 2013)
• ISSN：1520-510X

文摘

We report the synthesis of a novel hierarchical MnO<sub>2sub>/SnO<sub>2sub> heterostructures via a hydrothermal method. Secondary SnO<sub>2sub> nanostructure grows epitaxially on the surface of MnO<sub>2sub> backbones without any surfactant, which relies on the minimization of surface energy and interfacial lattice mismatch. Detailed investigations reveal that the cover density and morphology of the SnO<sub>2sub> nanostructure can be tailored by changing the experimental parameter. Moreover, we demonstrate a bottom-up method to produce energetic nanocomposites by assembling nanoaluminum (n-Al) and MnO<sub>2sub>/SnO<sub>2sub> hierarchical nanostructures into a free-standing MnO<sub>2sub>/SnO<sub>2sub>/n-Al ternary thermite membrane. This assembled approach can significantly reduce diffusion distances and increase their intimacy between the components. Different thermite mixtures were investigated to evaluate the corresponding activation energies using DSC techniques. The energy performance of the ternary thermite membrane can be manipulated through different components of the MnO<sub>2sub>/SnO<sub>2sub> heterostructures. Overall, our work may open a new route for new energetic materials.