金属间化合物
碳纳米管
材料科学
手性(物理)
钴
催化作用
钨
化学气相沉积
碳纤维
原材料
纳米技术
甲烷
化学工程
选择性
冶金
复合材料
化学
有机化学
合金
夸克
工程类
物理
复合数
量子力学
手征对称破缺
Nambu–Jona Lasinio模型
作者
Qidong Liu,Feng Yang,Yan Zhang,Xue Zhao,Zeyao Zhang,Sheng Zhu,Yan Li
出处
期刊:ChemNanoMat
[Wiley]
日期:2022-02-10
卷期号:8 (4)
被引量:4
标识
DOI:10.1002/cnma.202200037
摘要
Abstract After chirality‐specified growth of single‐walled carbon nanotubes (SWCNTs) was realized by tungsten‐based intermetallic compound catalysts, here we developed a different kind of intermetallic compound, cobalt disilicide (CoSi 2 ), as catalysts to selective grow carbon nanotubes by chemical vapor deposition (CVD). By using methane as carbon source, we obtained (11, 7) tubes with the selectivity of ∼24% and semiconducting SWCNTs (s‐SWCNTs) with the purity of ∼93% simultaneously. Because of the sensitivity of CoSi 2 toward the oxygen‐containing environment at high temperatures, ethanol is not a good carbon feedstock. Our results not only expand the chirality library and catalyst database in the chirality‐selective synthesis of SWCNTs, but also further demonstrate the feasibility of intermetallic compound catalysts.
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