Lee Jong-Hwan, Han Hyun-Ho, Seo Jong-Min, Jeong Goo-Hwan
Department of Advanced Materials Science and Engineering, Kangwon National University, Chuncheon 24341, Gangwon-do, Republic of Korea.
Materials (Basel). 2023 Mar 29;16(7):2735. doi: 10.3390/ma16072735.
The fabrication of multi-dimensional nanocomposites has been extensively attempted to achieve synergistic performance through the uniform mixing of functional constituents. Herein, we report a one-pot fabrication of nanocomposites composed of carbon nanotubes (CNTs) and AlO powder. Our strategy involves a synthesis of CNTs on the entire AlO surface using a rotatable chemical vapor deposition system (RCVD). Ehylene and ferritin-induced nanoparticles were used as the carbon source and wet catalyst, respectively. The RCVD was composed of a quartz reaction tube, 5.08 cm in diameter and 150 cm in length, with a rotation speed controller. Ferritin dissolved in deionized water was uniformly dispersed on the AlO surface and calcinated to obtain iron nanoparticles. The synthesis temperature, time, and rotation speed of the chamber were the main parameters used to investigate the growth behavior of CNTs. We found that the CNTs can be grown at least around 600 °C, and the number of tubes increases with increasing growth time. A faster rotation of the chamber allows for the uniform growth of CNT by the tip-growth mechanism. Our results are preliminary at present but show that the RCVD process is sufficient for the fabrication of powder-based nanocomposites.
为了通过功能成分的均匀混合实现协同性能，人们广泛尝试制备多维纳米复合材料。在此，我们报告了一种由碳纳米管（CNT）和氧化铝粉末组成的纳米复合材料的一锅法制备。我们的策略是使用可旋转化学气相沉积系统（RCVD）在整个氧化铝表面合成碳纳米管。分别使用乙烯和铁蛋白诱导的纳米颗粒作为碳源和湿催化剂。RCVD由一个直径5.08厘米、长度150厘米的石英反应管和一个转速控制器组成。溶解在去离子水中的铁蛋白均匀分散在氧化铝表面并进行煅烧以获得铁纳米颗粒。腔室的合成温度、时间和转速是用于研究碳纳米管生长行为的主要参数。我们发现碳纳米管至少可以在600℃左右生长，并且管的数量随着生长时间的增加而增加。腔室的更快旋转允许通过尖端生长机制使碳纳米管均匀生长。我们目前的结果是初步的，但表明RCVD工艺足以制备基于粉末的纳米复合材料。
