A robust CoxMg1-xO catalyst for predominantly growing (6, 5) single-walled carbon nanotubes

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A robust CoxMg1-xO catalyst for predominantly growing (6, 5) single-walled carbon nanotubes. / He, Maoshuai; Li, Dong; Yang, Tao; Shang, Danhong; Chernov, Alexander I.; Fedotov, Pavel V.; Obraztsova, Elena D.; Liu, Qing; Jiang, Hua; Kauppinen, Esko.

In: Carbon, Vol. 153, 01.11.2019, p. 389-395.

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He, Maoshuai ; Li, Dong ; Yang, Tao ; Shang, Danhong ; Chernov, Alexander I. ; Fedotov, Pavel V. ; Obraztsova, Elena D. ; Liu, Qing ; Jiang, Hua ; Kauppinen, Esko. / A robust CoxMg1-xO catalyst for predominantly growing (6, 5) single-walled carbon nanotubes. In: Carbon. 2019 ; Vol. 153. pp. 389-395.

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@article{5984291ec29d46698c9d1cc10afab6f7,
title = "A robust CoxMg1-xO catalyst for predominantly growing (6, 5) single-walled carbon nanotubes",
abstract = "Chirality-controlled growth of single-walled carbon nanotubes (SWCNTs) by chemical vapor deposition (CVD) is one of the most challenging tasks in carbon nanotube synthesis field. During CVD growth, the catalyst plays crucial roles in governing SWCNT nucleation thermodynamics as well as growth kinetics. However, the performances of catalyst are generally sensitive to the metal loading amount in the catalyst and the reaction conditions, like the partial pressure of carbon source and the reaction time. In this work, we have systematically investigated a robust CoxMg1-xO solid solution, which can predominantly yield (6, 5) SWCNTs in a wide range of Co concentration, with a diversity of CO concentrations or a broad-ranging reaction time. Besides, the effect of reaction temperature on SWCNT chirality distribution is demonstrated, the mechanism of which is clarified with the assistance of environmental transmission electron microscopy. Finally, the chirality distribution of SWCNTs grown using CH4 as the carbon source is presented. The effects of carbon sources are discussed in view of SWCNT growth mode.",
keywords = "Carbon source, CoMgO solid solution, Partial pressure, Single-walled carbon nanotube, Tube-metal interaction",
author = "Maoshuai He and Dong Li and Tao Yang and Danhong Shang and Chernov, {Alexander I.} and Fedotov, {Pavel V.} and Obraztsova, {Elena D.} and Qing Liu and Hua Jiang and Esko Kauppinen",
year = "2019",
month = "11",
day = "1",
doi = "10.1016/j.carbon.2019.07.050",
language = "English",
volume = "153",
pages = "389--395",
journal = "Carbon",
issn = "0008-6223",

}

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TY - JOUR

T1 - A robust CoxMg1-xO catalyst for predominantly growing (6, 5) single-walled carbon nanotubes

AU - He, Maoshuai

AU - Li, Dong

AU - Yang, Tao

AU - Shang, Danhong

AU - Chernov, Alexander I.

AU - Fedotov, Pavel V.

AU - Obraztsova, Elena D.

AU - Liu, Qing

AU - Jiang, Hua

AU - Kauppinen, Esko

PY - 2019/11/1

Y1 - 2019/11/1

N2 - Chirality-controlled growth of single-walled carbon nanotubes (SWCNTs) by chemical vapor deposition (CVD) is one of the most challenging tasks in carbon nanotube synthesis field. During CVD growth, the catalyst plays crucial roles in governing SWCNT nucleation thermodynamics as well as growth kinetics. However, the performances of catalyst are generally sensitive to the metal loading amount in the catalyst and the reaction conditions, like the partial pressure of carbon source and the reaction time. In this work, we have systematically investigated a robust CoxMg1-xO solid solution, which can predominantly yield (6, 5) SWCNTs in a wide range of Co concentration, with a diversity of CO concentrations or a broad-ranging reaction time. Besides, the effect of reaction temperature on SWCNT chirality distribution is demonstrated, the mechanism of which is clarified with the assistance of environmental transmission electron microscopy. Finally, the chirality distribution of SWCNTs grown using CH4 as the carbon source is presented. The effects of carbon sources are discussed in view of SWCNT growth mode.

AB - Chirality-controlled growth of single-walled carbon nanotubes (SWCNTs) by chemical vapor deposition (CVD) is one of the most challenging tasks in carbon nanotube synthesis field. During CVD growth, the catalyst plays crucial roles in governing SWCNT nucleation thermodynamics as well as growth kinetics. However, the performances of catalyst are generally sensitive to the metal loading amount in the catalyst and the reaction conditions, like the partial pressure of carbon source and the reaction time. In this work, we have systematically investigated a robust CoxMg1-xO solid solution, which can predominantly yield (6, 5) SWCNTs in a wide range of Co concentration, with a diversity of CO concentrations or a broad-ranging reaction time. Besides, the effect of reaction temperature on SWCNT chirality distribution is demonstrated, the mechanism of which is clarified with the assistance of environmental transmission electron microscopy. Finally, the chirality distribution of SWCNTs grown using CH4 as the carbon source is presented. The effects of carbon sources are discussed in view of SWCNT growth mode.

KW - Carbon source

KW - CoMgO solid solution

KW - Partial pressure

KW - Single-walled carbon nanotube

KW - Tube-metal interaction

UR - http://www.scopus.com/inward/record.url?scp=85069545073&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2019.07.050

DO - 10.1016/j.carbon.2019.07.050

M3 - Article

VL - 153

SP - 389

EP - 395

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -

ID: 37149234