碳纳米管
材料科学
纳米颗粒
催化作用
化学工程
纳米技术
金属
制作
碳纤维
结合能
动力学
复合材料
化学
复合数
有机化学
病理
工程类
物理
核物理学
冶金
替代医学
医学
量子力学
作者
Xin Li,Zhang Feng,Lili Zhang,Zhong-Hai Ji,Yiming Zhao,Ziwei Xu,Yang Wang,Peng‐Xiang Hou,Min Tian,Haibo Zhao,Song Jiang,Lin-Quan Ping,Hui‐Ming Cheng,Chang Liu
出处
期刊:ACS Nano
[American Chemical Society]
日期:2022-01-07
卷期号:16 (1): 232-240
被引量:18
标识
DOI:10.1021/acsnano.1c05969
摘要
The controlled growth of metallic single-wall carbon nanotubes (m-SWCNTs) is very important for the fabrication of high-performance interconnecting wires, transparent conductive electrodes, light and conductive fibers, etc. However, it has been extremely difficult to synthesize m-SWCNTs due to their lower abundance and higher chemical reactivity than semiconducting SWCNTs (s-SWCNTs). Here, we report the kinetically controlled growth of m-SWCNTs by manipulating their binding energy with the catalyst and promoting their growth rate. We prepared CoRe4 nanoparticles with a hexagonal close-packed structure and an average size of ∼2.3 nm, which have a lower binding energy with m-SWCNTs than with s-SWCNTs. The selective growth of m-SWCNTs from the CoRe4 catalyst was achieved by using a low concentration of carbon source feed at a relative low temperature of 760 °C. The m-SWCNTs had a narrow diameter distribution of 1.1 ± 0.3 nm, and their content was over 80%.
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