材料科学
催化作用
碳纳米管
化学工程
碳纤维
产量(工程)
金属
无定形碳
纳米技术
复合数
无定形固体
冶金
复合材料
有机化学
化学
工程类
作者
Dewu Lin,Shuchen Zhang,Weiming Liu,Yue Yu,Jin Zhang
出处
期刊:Small
[Wiley]
日期:2019-07-02
卷期号:15 (35): 1902240-1902240
被引量:11
标识
DOI:10.1002/smll.201902240
摘要
Scale-up production of single-walled carbon nanotubes (SWNTs) with high quality and purity is in pursuit, since the subsequent post purification treatment of residual metal or amorphous carbon is complicated and restricts further applications. Here, a compatible method to efficiently synthesize pure SWNTs on various supporters by using the precarburized Fe/Ni catalysts is reported. The preparation of catalysts is achieved by gas phase deposition together with CO gas at proper temperature, and the carburization of metal particles occurring simultaneously contributes to the size limitation of catalysts. By using micro-quartz sand as a recyclable supporter, high-quality SWNTs with a yield of 50 mg h-1 are prepared with 60% metal precursor utilization, 81% carbon source utilization, and only 0.12% (m/m) metal residues. Taking advantage of carburized Fe/Ni catalysts and appropriate supports makes it possible to balance the quantity, purity, and quality among SWNTs growth. Furthermore, this method provides a straightforward pathway to strongly combine SWNTs and diverse composite materials for further potential applications.
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