Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts

Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts

In this work, multi-walled carbon nanotubes (MWCNTs) with significantly different mean diameters were produced by catalytic CVD over Ni and Co-based supported catalysts. Our results indicate that Ni nanoparticles in the Ni/MgO catalyst are responsible for controlling the inner diameters of the carbo...

Full description

Bibliographic Details
Main Authors: Lemesh N.V., Strizhak P.E.
Format: Article
Language:English
Published: Sciendo 2018-12-01
Series:Materials Science-Poland
Subjects:
carbon nanotubes
nanoparticles
nickel
cobalt
metal-support interaction
Online Access:https://doi.org/10.2478/msp-2018-0089
id doaj-25444b0aae414a1cadf077f9a8a62fab
record_format Article
spelling doaj-25444b0aae414a1cadf077f9a8a62fab2021-09-06T19:22:35ZengSciendoMaterials Science-Poland2083-134X2018-12-0136473974710.2478/msp-2018-0089msp-2018-0089Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalystsLemesh N.V.0Strizhak P.E.1L.V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine Prosp. Nauki 31, Kiev03028, UkraineL.V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine Prosp. Nauki 31, Kiev03028, UkraineIn this work, multi-walled carbon nanotubes (MWCNTs) with significantly different mean diameters were produced by catalytic CVD over Ni and Co-based supported catalysts. Our results indicate that Ni nanoparticles in the Ni/MgO catalyst are responsible for controlling the inner diameters of the carbon nanotubes. Contrary, Co nanoparticles in the Co/MgO catalyst control the outer diameters of MWCNTs. The “base-growth” mechanism and smaller diameters of the MWCNTs grown on the Ni/MgO catalyst are associated with a strong metal-support interaction (SMSI) resulting from NixMg1−xO mixed oxide formation. The concept of the weak metal-support interaction (WMSI) between Co nanoparticles and MgO for the Co/MgO catalyst confirms the “tip-growth” mechanism of the MWCNTs.https://doi.org/10.2478/msp-2018-0089carbon nanotubesnanoparticlesnickelcobaltmetal-support interaction
collection DOAJ
language English
format Article
sources DOAJ
author Lemesh N.V.
Strizhak P.E.
spellingShingle Lemesh N.V.
Strizhak P.E.
Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts
Materials Science-Poland
carbon nanotubes
nanoparticles
nickel
cobalt
metal-support interaction
author_facet Lemesh N.V.
Strizhak P.E.
author_sort Lemesh N.V.
title Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts
title_short Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts
title_full Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts
title_fullStr Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts
title_full_unstemmed Synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over Ni/MgO and Co/MgO catalysts
title_sort synthesis of multi-walled carbon nanotubes with controlled inner and outer diameters by ethylene decomposition over ni/mgo and co/mgo catalysts
publisher Sciendo
series Materials Science-Poland
issn 2083-134X
publishDate 2018-12-01
description In this work, multi-walled carbon nanotubes (MWCNTs) with significantly different mean diameters were produced by catalytic CVD over Ni and Co-based supported catalysts. Our results indicate that Ni nanoparticles in the Ni/MgO catalyst are responsible for controlling the inner diameters of the carbon nanotubes. Contrary, Co nanoparticles in the Co/MgO catalyst control the outer diameters of MWCNTs. The “base-growth” mechanism and smaller diameters of the MWCNTs grown on the Ni/MgO catalyst are associated with a strong metal-support interaction (SMSI) resulting from NixMg1−xO mixed oxide formation. The concept of the weak metal-support interaction (WMSI) between Co nanoparticles and MgO for the Co/MgO catalyst confirms the “tip-growth” mechanism of the MWCNTs.
topic carbon nanotubes
nanoparticles
nickel
cobalt
metal-support interaction
url https://doi.org/10.2478/msp-2018-0089
work_keys_str_mv AT lemeshnv synthesisofmultiwalledcarbonnanotubeswithcontrolledinnerandouterdiametersbyethylenedecompositionovernimgoandcomgocatalysts
AT strizhakpe synthesisofmultiwalledcarbonnanotubeswithcontrolledinnerandouterdiametersbyethylenedecompositionovernimgoandcomgocatalysts
_version_ 1717771669124153344

Similar Items