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首页> 外文期刊>RSC Advances >Single-step synthesis of carbon nanotubes/iron/iron oxide composite films through inert-ambient CVD using ferric acetylacetonate as a precursor
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Single-step synthesis of carbon nanotubes/iron/iron oxide composite films through inert-ambient CVD using ferric acetylacetonate as a precursor

机译：以乙酰丙酮铁为前体，通过惰性环境CVD单步合成碳纳米管/铁/氧化铁复合膜

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摘要

We have developed a unique single-step chemical vapor deposition (CVD) route for the synthesis of composite thin films containing carbon nanotubes (CNTs). CVD was carried out in an inert ambient using only iron(III) acetylacetonate as the precursor. Depositions were conducted at 700 degrees C on stainless steel substrates in argon ambient in the absence of any reactive gases (such as oxygen, hydrogen). By changing the deposition parameters, especially the pressure in the CVD reactor, the form of carbon deposited could be changed from amorphous to carbon nanotubes, the latter resulting in Fe-Fe3O4-CNT films. X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and electron microscopy together confirm the formation of the three-component composite and illustrate the nanoscale mixing of the components. Elemental iron formed in this process was protected from oxidation by the co-deposited carbon surrounding it. Irrespective of the substrate used, a composite coating with CNTs was formed under optimum conditions, as verified by analyses of the film formed on polycrystalline alumina and silicon substrates.
机译：我们已经开发出一种独特的单步化学气相沉积（CVD）路线，用于合成包含碳纳米管（CNT）的复合薄膜。在惰性环境中仅使用乙酰丙酮铁（III）作为前体进行CVD。在不存在任何反应性气体（例如氧气，氢气）的情况下，在氩气环境下于700摄氏度在不锈钢基材上进行沉积。通过改变沉积参数，特别是改变CVD反应器中的压力，可以将沉积的碳形式从无定形变为碳纳米管，后者形成Fe-Fe3O4-CNT膜。 X射线衍射，拉曼光谱，X射线光电子能谱和电子显微镜共同证实了三组分复合物的形成，并说明了组分的纳米级混合。在此过程中形成的元素铁被周围共同沉积的碳所保护，免受氧化。不管使用哪种基材，在最佳条件下均会形成具有CNT的复合涂层，这一点已通过对在多晶氧化铝和硅基材上形成的膜的分析进行了验证。

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