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首页> 外文期刊>Nanotechnology >Defects induced on chemical vapour deposition carbon nanotubes during peapod synthesis on substrates
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Defects induced on chemical vapour deposition carbon nanotubes during peapod synthesis on substrates

机译：基质上豌豆脚合成过程中化学气相沉积碳纳米管引起的缺陷

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摘要

Individual carbon nanotubes are filled with fullerene molecules directly on the substrate. Two different oxidation techniques for opening the tubes prior to the filling, annealing in air, and acid treatment, are compared. High-resolution transmission electron microscopy images indicate that both methods induce defects on the sidewalls of the nanotubes. In the case of acid treatment, the inner walls can be damaged without affecting the outer walls, while the inner walls are opened along with the outer ones by heating in air. The effect of acid treatment on the tubes is much stronger than known from bulk samples. In contrast to previous studies, we find amorphous carbon inside the nanotubes after oxidation, and an additional high-temperature annealing step is needed to remove these plugs in order to open the tubes for filling.
机译：单个碳纳米管直接在基板上填充有富勒烯分子。比较了在填充，空气中退火和酸处理之前打开管子的两种不同的氧化技术。高分辨率透射电子显微镜图像表明，这两种方法都会在纳米管的侧壁上引起缺陷。在酸处理的情况下，内壁可以在不影响外壁的情况下被损坏，而内壁通过在空气中加热而与外壁一起打开。酸处理对试管的影响要比散装样品已知的要强得多。与先前的研究相比，我们发现氧化后纳米管内部存在无定形碳，并且需要额外的高温退火步骤来去除这些堵塞物，以便打开管进行填充。

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