Graphite-incorporated MoS 2 nanotubes: A new coaxial binary system

C. Reza San Germán; P. Santiago; J. A. Ascencio; U. Pal; M. Pérez-Alvarez; L. Rendón; D. Mendoza

doi:10.1021/jp052174e

Graphite-incorporated MoS ₂ nanotubes: A new coaxial binary system

C. Reza San Germán, P. Santiago, J. A. Ascencio, U. Pal, M. Pérez-Alvarez, L. Rendón, D. Mendoza

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Graphite-filled MoS ₂ nanotubes were synthesized by pyrolizing propylene inside MoS ₂ nanotubes prepared by a template-assisted technique. The large coaxial nanotubes were constituted of graphite sheets inserted between the MoS ₂ layers, forming the outer part, and coaxial multiwall carbon nanotubes intercalated with MoS ₂ inside. High-resolution electron microscopy (HREM) and electron energy loss spectroscopy techniques along with molecular dynamics simulation and quantum mechanical calculations were used to characterize the samples. The one-dimensional structures exhibit diverse morphologies such as long straight and twisted nanotubes with several structural irregularities. The interplanar spacing between the MoS ₂ layers was found to increase from 6.3 to 7.4 Å due to intercalation with carbon. Simulated HREM images revealed the presence of mechanical strains in the carbon-intercalated MoS ₂ layers as the reason for obtaining these twisted nanostructures. The mechanism of formation of carbon-intercalated MoS ₂ tubular structures and their stability and electronic properties are discussed. Our results open up the possibility of using MoS ₂ nanotubes as templates for the synthesis of new one-dimensional binary-phase systems.

Original language	English
Pages (from-to)	17488-17495
Number of pages	8
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	37
DOIs	https://doi.org/10.1021/jp052174e
State	Published - 22 Sep 2005
Externally published	Yes

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title = "Graphite-incorporated MoS 2 nanotubes: A new coaxial binary system",

abstract = "Graphite-filled MoS 2 nanotubes were synthesized by pyrolizing propylene inside MoS 2 nanotubes prepared by a template-assisted technique. The large coaxial nanotubes were constituted of graphite sheets inserted between the MoS 2 layers, forming the outer part, and coaxial multiwall carbon nanotubes intercalated with MoS 2 inside. High-resolution electron microscopy (HREM) and electron energy loss spectroscopy techniques along with molecular dynamics simulation and quantum mechanical calculations were used to characterize the samples. The one-dimensional structures exhibit diverse morphologies such as long straight and twisted nanotubes with several structural irregularities. The interplanar spacing between the MoS 2 layers was found to increase from 6.3 to 7.4 {\AA} due to intercalation with carbon. Simulated HREM images revealed the presence of mechanical strains in the carbon-intercalated MoS 2 layers as the reason for obtaining these twisted nanostructures. The mechanism of formation of carbon-intercalated MoS 2 tubular structures and their stability and electronic properties are discussed. Our results open up the possibility of using MoS 2 nanotubes as templates for the synthesis of new one-dimensional binary-phase systems.",

author = "Germ{\'a}n, {C. Reza San} and P. Santiago and Ascencio, {J. A.} and U. Pal and M. P{\'e}rez-Alvarez and L. Rend{\'o}n and D. Mendoza",

year = "2005",

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doi = "10.1021/jp052174e",

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T1 - Graphite-incorporated MoS 2 nanotubes

T2 - A new coaxial binary system

AU - Germán, C. Reza San

AU - Santiago, P.

AU - Ascencio, J. A.

AU - Pal, U.

AU - Pérez-Alvarez, M.

AU - Rendón, L.

AU - Mendoza, D.

PY - 2005/9/22

Y1 - 2005/9/22

N2 - Graphite-filled MoS 2 nanotubes were synthesized by pyrolizing propylene inside MoS 2 nanotubes prepared by a template-assisted technique. The large coaxial nanotubes were constituted of graphite sheets inserted between the MoS 2 layers, forming the outer part, and coaxial multiwall carbon nanotubes intercalated with MoS 2 inside. High-resolution electron microscopy (HREM) and electron energy loss spectroscopy techniques along with molecular dynamics simulation and quantum mechanical calculations were used to characterize the samples. The one-dimensional structures exhibit diverse morphologies such as long straight and twisted nanotubes with several structural irregularities. The interplanar spacing between the MoS 2 layers was found to increase from 6.3 to 7.4 Å due to intercalation with carbon. Simulated HREM images revealed the presence of mechanical strains in the carbon-intercalated MoS 2 layers as the reason for obtaining these twisted nanostructures. The mechanism of formation of carbon-intercalated MoS 2 tubular structures and their stability and electronic properties are discussed. Our results open up the possibility of using MoS 2 nanotubes as templates for the synthesis of new one-dimensional binary-phase systems.

AB - Graphite-filled MoS 2 nanotubes were synthesized by pyrolizing propylene inside MoS 2 nanotubes prepared by a template-assisted technique. The large coaxial nanotubes were constituted of graphite sheets inserted between the MoS 2 layers, forming the outer part, and coaxial multiwall carbon nanotubes intercalated with MoS 2 inside. High-resolution electron microscopy (HREM) and electron energy loss spectroscopy techniques along with molecular dynamics simulation and quantum mechanical calculations were used to characterize the samples. The one-dimensional structures exhibit diverse morphologies such as long straight and twisted nanotubes with several structural irregularities. The interplanar spacing between the MoS 2 layers was found to increase from 6.3 to 7.4 Å due to intercalation with carbon. Simulated HREM images revealed the presence of mechanical strains in the carbon-intercalated MoS 2 layers as the reason for obtaining these twisted nanostructures. The mechanism of formation of carbon-intercalated MoS 2 tubular structures and their stability and electronic properties are discussed. Our results open up the possibility of using MoS 2 nanotubes as templates for the synthesis of new one-dimensional binary-phase systems.

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U2 - 10.1021/jp052174e

DO - 10.1021/jp052174e

M3 - Artículo

SN - 1520-6106

VL - 109

SP - 17488

EP - 17495

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 37

ER -

Graphite-incorporated MoS ₂ nanotubes: A new coaxial binary system

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