Highly selective growth of (6,5) single-walled carbon nanotubes from sigma phase alloy catalyst

被引：2

作者：

Xin, Liantao ^{[1
]}

Ma, Chen ^{[1
]}

Wu, Qianru ^{[1
]}

Liu, Shaokang ^{[2
]}

Li, Linhai ^{[3
]}

Zhang, Xiuyun ^{[4
]}

Qian, Liu ^{[5
]}

He, Maoshuai ^{[1
]}

Li, Dong ^{[1
]}

Han, Fangqian ^{[1
]}

Hao, Shulan ^{[1
]}

Feng, Lihu ^{[1
]}

Li, Yahan ^{[1
]}

Liu, Huaping ^{[3
]}

Zhang, Lili ^{[2
]}

Liu, Chang ^{[2
]}

Zhang, Jin ^{[5
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[3] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[4] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Peoples R China

[5] Peking Univ, Coll Chem & Mol Engn, Ctr Nanochem, Beijing Sci & Engn Ctr Nanocarbons,Beijing Natl La, Beijing 100871, Peoples R China

来源：

NANO RESEARCH | 2024年 / 17卷 / 03期

基金：

中国国家自然科学基金;

关键词：

single-walled carbon nanotubes; sigma phase; manganese-rhenium catalyst; selective growth; transition-metal alloy;

D O I：

10.1007/s12274-023-5930-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The chirality structure of a single-walled carbon nanotube (SWNT) strongly depends on the composition of catalyst used in the chemical vapor deposition process. In this study, we develop a porous magnesia supported manganese-rhenium (MnRe/MgO) catalyst for chirality-selective synthesis of SWNTs. Detailed characterizations reveal that (6,5) tubes with a selectivity higher than 70% are grown from the Re-rich MnRe/MgO catalyst. By comparing the SWNT growth results with those of monometallic Mn or Re, the formation of sigma phase, an intermetallic compound occurring in transition-metal alloy systems, is revealed to be crucial for the dominant synthesis of (6,5) SWNTs. This work not only extends the application of sigma phase alloy for catalytic synthesis of SWNTs, but also sheds lights on the growth of SWNTs with a high chirality selectivity.

引用

页码：1999 / 2003

页数：5

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