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首页> 外文期刊>Nanotechnology >Site-selective synthesis of in situ Ni-filled multi-walled carbon nanotubes using Ni(salen) as a catalyst source
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Site-selective synthesis of in situ Ni-filled multi-walled carbon nanotubes using Ni(salen) as a catalyst source

机译：以Ni（salen）为催化剂源选择性地合成原位填充Ni的多壁碳纳米管

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摘要

The synthesis of Ni-filled multi-walled carbon nanotubes was performed by atmospheric pressure chemical vapor deposition with propane on Si at 850 °C using a simple mixture of (N,N′-bis(salicylidene)-ethylenediiminato) nickel(II), commonly known as Ni(salen), and a conventional photoresist. Analysis of the carbon nanotubes using scanning electron microscopy together with high-resolution transmission electron microscopy show that the nanotubes have grown by a tip-growth mechanism and exhibit a multi-walled structure with partial Ni filling. The high quality of the Ni-filled nanotubes is evidenced by Raman spectroscopy. The magnetic properties of Ni-filled nanotubes were analyzed using a superconducting quantum interference device which revealed their ferromagnetic behavior with large coercivity. A scalable as well as site-selective growth of high quality Ni-filled carbon nanotubes is achieved by a simple photolithographic method.
机译：镍填充的多壁碳纳米管的合成是通过在常温下用丙烷在850°C的温度下使用丙烷在N上的简单化学混合物（N，N'-双（水杨基）-乙烯二亚氨基）镍（II）进行的化学气相沉积来完成的。通常称为Ni（salen）和常规光刻胶。使用扫描电子显微镜和高分辨率透射电子显微镜对碳纳米管的分析表明，碳纳米管通过尖端生长机制生长，并表现出具有部分镍填充的多壁结构。镍填充纳米管的高质量通过拉曼光谱法得到证明。使用超导量子干涉装置分析了填充镍的纳米管的磁性能，该装置揭示了它们具有强矫顽力的铁磁行为。通过简单的光刻方法即可实现高质量的Ni填充碳纳米管的可扩展以及定点生长。

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