Investigation of Defectiveness of Multiwalled Carbon Nanotubes Produced with Fe–Co Catalysts of Different Composition | Sciact - CRIS-system of Boreskov Institute of Catalysis

Investigation of Defectiveness of Multiwalled Carbon Nanotubes Produced with Fe–Co Catalysts of Different Composition Full article

Journal

Journal of Nanophotonics
ISSN: 1934-2608

Output data

Year: 2016, Volume: 10, Number: 1, Article number : 012526, Pages count : 10 DOI: 10.1117/1.JNP.10.012526

Tags

Fe-Co catalysts with variable ratio of active metals, multiwalled carbon nanotubes, Raman spectroscopy, temperature dependence of conductivity

Authors

Bokova-Sirosh Sofya N. ^1,2 , Kuznetsov Vladimir L. ^3,4,6 , Romanenko Anatoly I. ^5,6 , Kazakova Mariya A. ^3,4 , Krasnikov Dmitry V. ^3,4 , Tkachev Evgeniy N. ⁵ , Yuzyuk Yuri I. ⁷ , Obraztsova Elena D. ^1,2

Affiliations

1	A. M. Prokhorov General Physics Institute RAS, 38 Vavilov Street, Moscow 119991, Russia
2	National Research Nuclear University MEPhI, Kashirskoe shosse, 31, Moscow 115409, Russia
3	Boreskov Institute of Catalysis SB RAS, Lavrentieva Avenue 5, Novosibirsk 630090, Russia
4	Novosibirsk State University, Pirogova Avenue 2, Novosibirsk 630090, Russia
5	Nikolaev Institute of Inorganic Chemistry, SB RAS, Lavrentieva Avenue 3, Novosibirsk 630090, Russia
6	National Tomsk State University, 36, Lenina Avenue, Tomsk 634050, Russia
7	Southern Federal University, Faculty of Physics, 5 Zorge Street, Rostov-on-Don 344090, Russia

Funding (4)

1	Russian Foundation for Basic Research	15-32-70013
2	Russian Foundation for Basic Research	16-32-60046
3	Russian Foundation for Basic Research	14-32-50078
4	Russian Foundation for Basic Research	15-32-50242

We have performed a study of CVD multiwalled carbon nanotubes (MWCNTs) produced with Fe–Co catalysts with a variable ratio of active metals. The Raman data were considered in combination with the temperature dependence of MWCNT conductivity. The data analysis is based on the point that the value of I2D/ID ratio correlates with the graphene fragment size. The fragments are considered as building blocks of MWCNTs. We showed that MWCNT defectiveness depends on the ratio of bimetallic active components in the Fe–Co catalyst. Thus, the ratio of I2D/ID increases and the D-mode intensity decreases while the Fe content in the catalyst increases. This also points to the reduction of defect number in the bigger graphene fragments. These results correlate with the data on conductivity temperature dependence. Namely, the increase of Fe content in the active component of the Fe–Co catalyst results in the increase of charge carrier concentration, which, in turn, indicates a decrease in MWCNT defectiveness.

Bokova-Sirosh S.N. , Kuznetsov V.L. , Romanenko A.I. , Kazakova M.A. , Krasnikov D.V. , Tkachev E.N. , Yuzyuk Y.I. , Obraztsova E.D.
Investigation of Defectiveness of Multiwalled Carbon Nanotubes Produced with Fe–Co Catalysts of Different Composition
Journal of Nanophotonics. 2016. V.10. N1. 012526 :1-10. DOI: 10.1117/1.JNP.10.012526 WOS Scopus РИНЦ OpenAlex

Submitted:	Oct 15, 2015
Published print:	Jan 1, 2016
Accepted:	Feb 11, 2016
Published online:	Mar 7, 2016

Web of science:	WOS:000374239400026
Scopus:	2-s2.0-84960941348
Elibrary:	27097946
OpenAlex:	W2293841012

DB	Citing
Web of science	24
Scopus	26
Elibrary	25
OpenAlex	25