Magnetic and Dielectric Properties of Carbon Nanotubes with Embedded Cobalt Nanoparticles | Sciact - CRIS-система Института катализа

Magnetic and Dielectric Properties of Carbon Nanotubes with Embedded Cobalt Nanoparticles Научная публикация

Журнал

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

Вых. Данные

Год: 2017, Том: 114, Страницы: 39-49 Страниц : 11 DOI: 10.1016/j.carbon.2016.11.070

Ключевые слова

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

Авторы

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

Организации

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

Информация о финансировании (4)

1	Российский фонд фундаментальных исследований	16-32-60046
2	Федеральное агентство научных организаций России	V.44.1.17. (0303-2014-0003)
3	Посольство Франции в России
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 OpenAlex CAPlusCA

Полный текст от издателя

Поступила в редакцию:	7 июл. 2016 г.
Принята к публикации:	26 нояб. 2016 г.
Опубликована online:	28 нояб. 2016 г.
Опубликована в печати:	1 апр. 2017 г.

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

≡ Web of science	49	Сбор данных от 13.02.2026
≡ Scopus	49	Сбор данных от 15.02.2026
≡ РИНЦ	52	Сбор данных от 15.02.2026
≡ OpenAlex	54	Сбор данных от 15.02.2026