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The importance of H-2 in the controlled growth of semiconducting single-wall carbon nanotubes
Zhang, Feng; Sun, Jia; Zheng, Yonggang; Hou, Peng-Xiang; Liu, Chang; Cheng, Min; Li, Xin; Cheng, Hui-Ming; Chen, Zhen
2020-10-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume54Pages:105-111
AbstractH-2 is considered an indispensable component of the atmosphere for the growth of high-quality single-wall carbon nanotubes (SWCNTs) by chemical vapor deposition. However, details of the roles H-2 playing are still unclear due to the complex conditions of SWCNT growth. In this study, we elucidate the functions of H-2 in the selective growth of semiconducting SWCNTs (s-SWCNTs) by using monodispersed uniform Fe nanoparticles as a catalyst. High-quality s-SWCNTs were synthesized by finely tuning the concentration of H-2 and the other growth parameters. Experimental data combined with atomistic simulations indicate that H-2 not only adjusts the concentration of the carbon source, but also serves as a mild etchant that selectively removes small carbon caps grown by a perpendicular mode from the Fe nanoparticles. These results provide useful hints for the controlled growth of SWCNTs with a semiconducting or metallic conductivity, and even a specific chirality. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
DOI10.1016/j.jmst.2020.02.067
WOS IDWOS:000545310500011
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82500
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhang, Feng,Sun, Jia,Zheng, Yonggang,et al. The importance of H-2 in the controlled growth of semiconducting single-wall carbon nanotubes[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,54:105-111.
APA Zhang, Feng.,Sun, Jia.,Zheng, Yonggang.,Hou, Peng-Xiang.,Liu, Chang.,...&Chen, Zhen.(2020).The importance of H-2 in the controlled growth of semiconducting single-wall carbon nanotubes.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,54,105-111.
MLA Zhang, Feng,et al."The importance of H-2 in the controlled growth of semiconducting single-wall carbon nanotubes".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 54(2020):105-111.
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