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题名: CoPt/CeO2 catalysts for the growth of narrow diameter semiconducting single-walled carbon nanotubes
作者: Tang, L(唐磊); Li, TT(李涛涛); Li, CW(李朝威); Ling, L(凌琳); Zhang, K(张凯); Yao, YG(姚亚刚)
通讯作者: Yao, YG (姚亚刚)
刊名: NANOSCALE
发表日期: 2015
DOI: 10.1039/c5nr05616k
卷: 7, 期:46, 页:6
收录类别: SCI
部门归属: 先进材料研究部
英文摘要: For the application of single-walled carbon nanotubes (SWNTs) in nanoelectronic devices, effective techniques for the growth of semiconducting SWNTs (s-SWNTs) with a specific diameter are still a great challenge. Herein, we report a facile strategy for the selective growth of narrow diameter distributed s-SWNTs using CoPt/CeO2 catalysts. The addition of Pt into a Co catalyst dramatically reduces the diameter distributions and even the chirality distributions of the as-grown SWNTs. Oxygen vacancies that are provided by mesoporous CeO2 are responsible for creating an oxidative environment to in situ etch metallic SWNTs (m-SWNTs). Atomic force microscope (AFM) and Raman spectroscopy characterizations indicate a narrow diameter distribution of 1.32 +/- 0.03 nm and the selective growth of s-SWNTs to 93%, respectively. In addition, electronic transport measurements also confirm that the I-on/I-off ratio is mainly in the order of similar to 10(3). This work provides an effective strategy for the facile fabrication of narrow diameter distributed s-SWNTs, which will be beneficial to fundamental research and the broad application of SWNTs for future nanoelectronics.
语种: 英语
JCR小类分区: 一区
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内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3451
Appears in Collections:先进材料研究部_姚亚刚团队_期刊论文

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Recommended Citation:
Tang, L,Li, TT,Li, CW,et al. CoPt/CeO2 catalysts for the growth of narrow diameter semiconducting single-walled carbon nanotubes[J]. NANOSCALE,2015,7(46):6.
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