Magnetic and Dielectric Properties of Carbon Nanotubes with Embedded Cobalt Nanoparticles | Sciact - CRIS-system of Boreskov Institute of Catalysis

Magnetic and Dielectric Properties of Carbon Nanotubes with Embedded Cobalt Nanoparticles Full article

Journal

Carbon
ISSN: 0008-6223 , E-ISSN: 1873-3891

Output data

Year: 2017, Volume: 114, Pages: 39-49 Pages count : 11 DOI: 10.1016/j.carbon.2016.11.070

Tags

FISCHER-TROPSCH SYNTHESIS; FERROMAGNETIC NANOPARTICLES; MECHANICAL-PROPERTIES; NANOSTRUCTURED MATERIALS; ELECTRICAL-CONDUCTIVITY; GRANULAR STRUCTURES; ELECTRODE MATERIALS; SURFACE-AREA; COMPOSITES; CATALYSTS

Authors

Andreev Andrey S. ^1,2,3 , Kazakova Мariya A. ^1,2 , Ishchenko Arcady V. ^1,2 , Selyutin Alexander G. ¹ , Lapina Olga B. ^1,2 , Kuznetsov Vladimir L. ^1,2 , d’Espinose de Lacaillerie Jean-Baptiste ³

Affiliations

1	Boreskov Institute of Catalysis, SB RAS, Lavrentieva 5, Novosibirsk 630090, Russia
2	Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia
3	Soft Matter Science and Engineering (SIMM), UMR CNRS 7615, PSL Research University, ESPCI Paris, 75005, Paris, France

Funding (4)

1	Federal Agency for Scientific Organizations	V.44.1.17. (0303-2014-0003)
2	Russian Foundation for Basic Research	16-32-60046
3	French Embassy in Moscow
4	The City of Paris Industrial Physics and Chemistry Higher Educational Institution

Obtaining stable metal nanoparticles is of high interest for various applications such as catalysis, batteries, supercapacitors and electro-magnetic devices. Cobalt/multi-walled carbon nanotubes (MWCNT) hybrids with an original set of magnetic and electric properties were formed by casting Co nanoparticles (3 – 5 nm) of high aspect ratios within the internal space of MWCNTs. The Co particles localization and size were analyzed by transmission electron microscopy and synchrotron x-ray diffraction. The magnetism of the cobalt nanoparticles was probed by 59Co internal field nuclear magnetic resonance (IF NMR) and their electrical behavior by dielectric spectroscopy. The majority of Co particles were fully metallic. They resisted sintering up to 550 °C. Below 7.5 wt%, the Co was exclusively embedded inside the MWCNT. At higher loading, they coexisted with larger Co outside particles. While nanometer size particles are normally superparamagnetic at room temperature, the confinement of Co within MWCNTs resulted in a ferromagnetism revealed by 59Co IF NMR. This spectroscopy provided original information about the structure, size, and shape anisotropy of the nanoparticles. Finally, the MWCNT modification by Co metal nanoparticles improved the electrical conductivity of polyethylene based composite thus extending the useful frequency band of Co/MWCNT/PE composites for applications requiring light-weight conduction or energy absorption.

Andreev A.S. , Kazakova М.A. , Ishchenko A.V. , Selyutin A.G. , Lapina O.B. , Kuznetsov V.L. , d’Espinose de Lacaillerie J-B.
Magnetic and Dielectric Properties of Carbon Nanotubes with Embedded Cobalt Nanoparticles

Carbon. 2017. V.114. P.39-49. DOI: 10.1016/j.carbon.2016.11.070 WOS Scopus РИНЦ ANCAN OpenAlex

Full text from publisher

Submitted:	Jul 7, 2016
Accepted:	Nov 26, 2016
Published online:	Nov 28, 2016
Published print:	Apr 1, 2017

Web of science:	WOS:000393249600006
Scopus:	2-s2.0-85002820367
Elibrary:	29473607
Chemical Abstracts:	2016:2055188
Chemical Abstracts (print):	166:252214
OpenAlex:	W2558651944

DB	Citing
Web of science	45
Scopus	45
Elibrary	48
OpenAlex	46