Universität zu Köln

He, Maoshuai, Li, Dong, Yang, Tao, Shang, Danhong, Chernov, Alexander I., Fedotov, Pavel V., Obraztsova, Elena D., Liu, Qing, Jiang, Hua and Kauppinen, Esko ORCID: 0000-0003-1727-8810 (2019). A robust CoxMg1-xO catalyst for predominantly growing (6,5) single-walled carbon nanotubes. Carbon, 153. S. 389 - 396. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1873-3891

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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. (C) 2019 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code He, Maoshuai UNSPECIFIED UNSPECIFIED UNSPECIFIED Li, Dong UNSPECIFIED UNSPECIFIED UNSPECIFIED Yang, Tao UNSPECIFIED UNSPECIFIED UNSPECIFIED Shang, Danhong UNSPECIFIED UNSPECIFIED UNSPECIFIED Chernov, Alexander I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fedotov, Pavel V. UNSPECIFIED UNSPECIFIED UNSPECIFIED Obraztsova, Elena D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Qing UNSPECIFIED UNSPECIFIED UNSPECIFIED Jiang, Hua UNSPECIFIED UNSPECIFIED UNSPECIFIED Kauppinen, Esko UNSPECIFIED orcid.org/0000-0003-1727-8810 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-130048
DOI:	10.1016/j.carbon.2019.07.050
Journal or Publication Title:	Carbon
Volume:	153
Page Range:	S. 389 - 396
Date:	2019
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1873-3891
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SELECTIVE GROWTH; CHIRALITY; CO; DIAMETER; MO Multiple languages Chemistry, Physical; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13004