SYNTHESIS AND CHARACTERIZATION OF 3D CARBON NANOTUBES

MRS Advances ◽  
2018 ◽  
Vol 3 (1-2) ◽  
pp. 103-108
Author(s):  
Oxana V. Kharissova ◽  
Beatriz Ortega Garcia ◽  
Patsy Y. Arquieta Guillén ◽  
Hugo V. Galindo Cuevas ◽  
Romeo Selvas Aguilar
Keyword(s):  
Carbon Nanotubes ◽  
3D Structure ◽  
Three Dimensional ◽  
Multiwall Carbon Nanotubes ◽  
Solution Concentration ◽  
Synthesis Process ◽  
Synthesis Time ◽  
Research Areas ◽  
Functionalization Of Carbon Nanotubes ◽  
Nanoparticles Of Silver

ABSTRACTA nanomaterial that attracts the attention in a variety of research areas is multiwall carbon nanotubes (MWCNTs), due to their good mechanical proprieties, and high electrical and thermal conductivity. For this reason, the preparation of three-dimensional (3D) structures from them draws interest because it opens new horizons to produce materials with novel properties and useful applications. In this investigation the synthesis of 3D nanotube carbon (nanoforest type) functionalized with nanoparticles of silver, aluminum, and iron was studied. A 3D structure was produced in the form of aligned microchannels. The functionalization of carbon nanotubes with nanoparticles of silver, aluminum or iron during the synthesis process of carbon nanotubes, was carried out through spray-pyrolysis with different synthesis time and solution concentration. The results were characterized through microscopy SEM, TEM and Raman’s spectroscopy.

scholarly journals A porous 3D-RGO@MWCNT hybrid material as Li–S battery cathode

2019 ◽  
Vol 10 ◽  
pp. 514-521 ◽  
Author(s):  
Yongguang Zhang ◽  
Jun Ren ◽  
Yan Zhao ◽  
Taizhe Tan ◽  
Fuxing Yin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
3D Structure ◽  
Three Dimensional ◽  
Rate Capability ◽  
Composite Matrix ◽  
Multiwalled Carbon ◽  
Shuttle Effect ◽  
Reduced Graphene

In this work, a unique three-dimensional (3D) structured carbon-based composite was synthesized. In the composite, multiwalled carbon nanotubes (MWCNT) form a lattice matrix in which porous spherical reduced graphene oxide (RGO) completes the 3D structure. When used in Li–S batteries, the 3D porous lattice matrix not only accommodates a high content of sulfur, but also induces a confinement effect towards polysulfide, and thereby reduces the “shuttle effect”. The as-prepared S-3D-RGO@MWCNT composite delivers an initial specific capacity of 1102 mAh·g−1. After 200 charging/discharge cycles, a capacity of 805 mAh·g−1 and a coulombic efficiency of 98% were maintained, implying the shuttle effect was greatly suppressed by the composite matrix. In addition, the S-3D-RGO@MWCNT composite also exhibits an excellent rate capability.

scholarly journals Infrared Spectroscopy of Ultraviolet-Irradiated Carbon Nanotubes

2020 ◽  
Vol 65 (4) ◽  
pp. 336
Author(s):  
I. Ovsiienko ◽  
T. Len ◽  
L. Matzui ◽  
O. Syvolozhskyi ◽  
D. Shpylka ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Infrared Spectroscopy ◽  
Functional Groups ◽  
Uv Irradiation ◽  
Relative Intensity ◽  
Multiwall Carbon Nanotubes ◽  
Short Term ◽  
Spectral Bands ◽  
Functionalization Of Carbon Nanotubes ◽  
Multiwall Carbon

The possibility of using the UV irradiation for a functionalization of carbon nanotubes with different degrees of structural perfection is considered. In investigations, the method of infrared spectroscopy is used. A change in the number of functional groups under the short-term UV irradiation of specimens with multiwall carbon nanotubes is estimated by a change in the relative intensity of the IR spectral bands corresponding to vibrations of the functional groups in comparison with the relative intensity of the band corresponding to vibrations of the carbon atoms in graphite.

scholarly journals 3D meshes of carbon nanotubes guide functional reconnection of segregated spinal explants

2016 ◽  
Vol 2 (7) ◽  
pp. e1600087 ◽  
Author(s):  
Sadaf Usmani ◽  
Emily Rose Aurand ◽  
Manuela Medelin ◽  
Alessandra Fabbro ◽  
Denis Scaini ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
3D Structure ◽  
Three Dimensional ◽  
Significant Progress ◽  
Multiwalled Carbon ◽  
3D Mesh ◽  
Pure Carbon ◽  
The Brain

In modern neuroscience, significant progress in developing structural scaffolds integrated with the brain is provided by the increasing use of nanomaterials. We show that a multiwalled carbon nanotube self-standing framework, consisting of a three-dimensional (3D) mesh of interconnected, conductive, pure carbon nanotubes, can guide the formation of neural webs in vitro where the spontaneous regrowth of neurite bundles is molded into a dense random net. This morphology of the fiber regrowth shaped by the 3D structure supports the successful reconnection of segregated spinal cord segments. We further observed in vivo the adaptability of these 3D devices in a healthy physiological environment. Our study shows that 3D artificial scaffolds may drive local rewiring in vitro and hold great potential for the development of future in vivo interfaces.

scholarly journals An Investigation on the Formation of Carbon Nanotubes by Two-Stage Chemical Vapor Deposition

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
M. S. Shamsudin ◽  
M. F. Achoi ◽  
M. N. Asiah ◽  
L. N. Ismail ◽  
A. B. Suriani ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Pyrolysis Temperature ◽  
Sol Gel ◽  
Chemical Vapor ◽  
Synthesis Process ◽  
Two Stage ◽  
Synthesis Time ◽  
Custom Made

High density of carbon nanotubes (CNTs) has been synthesized from agricultural hydrocarbon: camphor oil using a one-hour synthesis time and a titanium dioxide sol gel catalyst. The pyrolysis temperature is studied in the range of 700–900°C at increments of 50°C. The synthesis process is done using a custom-made two-stage catalytic chemical vapor deposition apparatus. The CNT characteristics are investigated by field emission scanning electron microscopy and micro-Raman spectroscopy. The experimental results showed that structural properties of CNT are highly dependent on pyrolysis temperature changes.

Three-dimensional nanoprepreg and nanostitched aramid/phenolic multiwall carbon nanotubes composites: Experimental determination of in-plane shear

2019 ◽  
Vol 53 (28-30) ◽  
pp. 4077-4096 ◽  
Author(s):  
Kadir Bilisik ◽  
Gulhan Erdogan ◽  
Erdal Sapanci ◽  
Sila Gungor
Keyword(s):  
Carbon Nanotubes ◽  
Three Dimensional ◽  
Multiwall Carbon Nanotubes ◽  
Nano Composites ◽  
Plane Shear ◽  
Pull Out ◽  
Out Of Plane ◽  
The Matrix ◽  
Multiwall Carbon

In-plane shear of nanostitched three-dimensional para-aramid/phenolic composites were experimentally investigated. Adding the nanostitched fiber into nanoprepreg para-aramid fabric preform composites slightly improved their shear strengths. The carbon-stitched composite exhibited comparatively better performance compared to the para-aramid stitched composite probably due to well bonding between carbon fiber and phenolic resin. The stitched nano composites had mainly matrix breakages and micro shear hackles in the matrix; matrix debonding and filament pull-out in the composite interface; fibrillar peeling and stripping on the filaments due to angular deformation. This mechanism probably prohibited extensive interlaminar opening in the nanostitched composites. The result exhibited that the introducing of the nano stitched fiber where multiwall carbon nanotubes were transferred to the out-of-plane of the base structure enhanced its transverse fracture as a form of confined delamination area. Therefore, the damaged tolerance properties of the stitched nano composites were enhanced compared to the base.

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