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In-vacuum thermolysis of ethane 1,2-diamineborane for the synthesis of ternary borocarbonitrides

机译:真空中乙烷1,2-二胺硼烷的热解反应以合成三价硼碳氮化物

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摘要

High-temperature (1000 degrees C) thermolytic decomposition of ethane 1,2-diamineborane (BH3NH2CH2CH2NH2BH3) deposited onto a Cu foil has been performed in an ultra-high-vacuum environment. A combined thermolytic, structural (x-ray diffraction), microscopic (scanning electron microscopy) and spectroscopic (Raman, x-ray photoemission spectroscopy) analysis, has identified a ternary borocarbonitride (BCN) compound as a result of the process. The obtained BCN compound is nanocrystalline, surrounded by crystallites of ammonium hydroxide borate hydrate. The ternary compound presents a 0.2:0.6:0.2 B:C:N composition in the bulk and 0.11:0.76:0.13 stoichiometry at the very surface, richer in C-C networks with respect to the bulk. Furthermore, the resulting BCN compound does not show oxidation at the surface due to the in-vacuum thermolysis of the single precursor.
机译:已经在超高真空环境中进行了沉积在铜箔上的乙烷1,2-二胺硼烷(BH3NH2CH2CH2NH2BH3)的高温(1000摄氏度)热分解。通过热分析,结构分析(X射线衍射),显微镜分析(扫描电子显微镜)和光谱分析(拉曼光谱,X射线光电子能谱)分析,已鉴定出三硼化碳氮化物(BCN)化合物。所获得的BCN化合物是纳米晶体,被氢氧化铵硼酸盐水合物的微晶包围。三元化合物在本体中具有0.2:0.6:0.2 B:C:N的组成,并且在非常表面处具有0.11:0.76:0.13的化学计量,相对于本体而言,其C-C网络更丰富。此外,由于真空中单个前体的热解,所得的BCN化合物在表面不显示氧化。

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