Synthesis and Characterization of Carbon Nanotubes from Natural Source - Camphor Oil

Carbon nanotubes (CNTs) were deposited on silicon wafer (Si) by Thermal Chemical Vapor Deposition (TCVD). The new starting material of camphor oil was used as carbon precursor. The gas flow of Argon (Ar) was constant at 100 bubbles per minute and 30 minutes of deposition time. Before the deposition process, silicon was coated with mixture of nickel (II) nitrate hexahydrate, Ni (NO3)2.6H2O and ethyl alcohol, C2H5OH using spin coater. Variable parameter which is deposition temperature has been studied. Chemical functional groups of carbon nanotubes were characterized using FTIR while surface morphology and uniformity were characterized using FESEM. The FTIR result shows peaks attributed to multi–walled carbon nanotubes (MWCNT) vibration modes.

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The Effect of Inoculum in the Preparation of Fermented Tapioca for Nanotechnology Applications Based on FT-IR Studies

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.667.534 ◽

2013 ◽

Vol 667 ◽

pp. 534-537

Author(s):

M.Z. Nuraini ◽

S. Aishah ◽

S.F. Nik ◽

Mohamad Rusop

Keyword(s):

Carbon Nanotubes ◽

Gas Flow ◽

Deposition Time ◽

Chemical Vapor ◽

Deposition Process ◽

Ir Studies ◽

Multi Walled Carbon Nanotubes ◽

Ft Ir ◽

Walled Carbon Nanotubes ◽

Ft Ir Spectroscopy

Fermented tapioca which is a new starting material was used as a carbon precursor. Carbon nanotubes (CNTs) were deposited on silicon wafer (Si) by Thermal Chemical Vapor Deposition (TCVD). The gas flow of Argon (Ar) was constant at 70 bubbles per minute and 20 minutes of deposition time. Before the deposition process, silicon was coated with Nickel using spin coater. Various parameters such as amount of inoculums have been studied. Chemical functional groups of carbon nanotubes were characterized using FT-IR Spectroscopy. The FT-IR result shows peaks attributed to multi–walled carbon nanotubes (MWCNT) vibration modes.

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Electron Microscopy and Raman Characterization of Multi-Walled Carbon Nanotubes Grown by Chemical Vapor Deposition

Microscopy and Microanalysis ◽

10.1017/s1431927608086984 ◽

2008 ◽

Vol 14 (S2) ◽

pp. 304-305

Author(s):

M Ellis ◽

T Jutarosaga ◽

S Smith ◽

Y Wei ◽

S Seraphin

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Chemical Vapor Deposition ◽

New Mexico ◽

Vapor Deposition ◽

Chemical Vapor ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes ◽

Raman Characterization

Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008

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Study of vertically aligned multi-walled carbon nanotubes array for an absolutely black body

Perspektivnye Materialy ◽

10.30791/1028-978x-2021-4-19-25 ◽

2021 ◽

Vol 4 ◽

pp. 19-25

Author(s):

T. N. Smetyukhova ◽

◽

E. A. Vysotina ◽

D. O. Monakhov ◽

S. K. Sigalayev ◽

...

Keyword(s):

Carbon Nanotubes ◽

Absorption Coefficient ◽

Gas Flow ◽

Chemical Vapor ◽

Black Body ◽

Small Mass ◽

Multi Walled Carbon Nanotubes ◽

High Absorption Coefficient ◽

Absolutely Black Body ◽

Walled Carbon Nanotubes

An array of vertically oriented multi-walled carbon nanotubes (VOMWCNT), obtained by chemical vapor deposition (CVD) on a silicon substrate without preliminary catalyst deposition, has been comprehensively investigated. The synthesis was carried out for 30 minutes in the reactor of a carbon nanotube synthesis unit under conditions of decomposition of the reaction mixture (ferrocene in heptane) at a temperature of 800 °C at a carrier gas flow rate of 200 ml/min. The structure and geometric characteristics of the array’s carbon nanotubes were determined using scanning and transmission electron microscopy and Raman spectroscopy. The spectral coefficient of diffuse reflection (SDR) into the hemisphere in the wavelength range from 5,0 to 15,0 μm was determined. From the obtained experimental data, it was found that the emissivity (absorption coefficient) of an array of carbon nanotubes with a height of (230 – 250) μm is 0,98 – 0,99 in the spectral range from 5,0 to 13,7 μm and 0,975 – 0,995 in the range from 13,7 to 15,0 μm. Such a VOMWCNT array can be used to develop an absolutely black body with a high absorption coefficient and small mass and size characteristics, which is used for calibrating spacecraft’s infrared spectrometers.

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Characterization of thin multi-walled carbon nanotubes synthesized by catalytic chemical vapor deposition

Chemical Physics Letters ◽

10.1016/j.cplett.2005.07.064 ◽

2005 ◽

Vol 413 (1-3) ◽

pp. 135-141 ◽

Cited By ~ 48

Author(s):

Dong Young Kim ◽

Cheol-Min Yang ◽

Young Soo Park ◽

Ki Kang Kim ◽

Seung Yol Jeong ◽

...

Keyword(s):

Carbon Nanotubes ◽

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Chemical Vapor ◽

Catalytic Chemical Vapor Deposition ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Identification of appropriate catalyst system for the growth of multi-walled carbon nanotubes via catalytic chemical vapor deposition process in a single step batch technique

Materials Research Express ◽

10.1088/2053-1591/ab3cbb ◽

2019 ◽

Vol 6 (10) ◽

pp. 105620 ◽

Cited By ~ 1

Author(s):

V Sivamaran ◽

V Balasubramanian ◽

M Gopalakrishnan ◽

V Viswabaskaran ◽

A Gourav Rao

Keyword(s):

Carbon Nanotubes ◽

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Chemical Vapor ◽

Deposition Process ◽

Catalyst System ◽

Single Step ◽

Batch Technique ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Fabrication and Characterization of Nanocomposites Reinforced by Carbon Nanotubes-(2)Testing of Mechanical Properties

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.313.1 ◽

2006 ◽

Vol 313 ◽

pp. 1-6

Author(s):

Nyan Hwa Tai ◽

Meng Kao Yeh ◽

Jia Hau Liu ◽

Chien Hsin Yang

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Chemical Vapor ◽

Nano Composites ◽

Growth Promoter ◽

Melt Mixing ◽

Resin Infiltration ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

Composites of phenolic resin reinforced by the multi-walled carbon nanotubes (MWCNTs) were fabricated and its mechanical properties were measured. The MWCNTs were synthesized by the floating catalyst method in a thermal chemical vapor deposition chamber. Benzene, hydrogen, ferrocene, and thiophene were used as carbon source, carrier gas, catalyst, and growth promoter, respectively. The nano-composites were made by the melt mixing and the resin infiltration methods. Tensile strength, Poisson’s ratio, and modulus were measured and the morphologies on the fracture surface were examined by the field emission scanning electron microscope (FESEM). The microstructure of the synthesized MWCNTs reinforced nano-composites was examined by FESEM. The influences of MWCNTs amounts on the mechanical properties of the nano-composites were discussed.

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Synthesis and Characterization of Tri-metallic Fe–Co–Ni Catalyst Supported on $$\hbox {CaCO}_{3}$$ CaCO 3 for Multi-Walled Carbon Nanotubes Growth via Chemical Vapor Deposition Technique

Arabian Journal for Science and Engineering ◽

10.1007/s13369-017-2478-2 ◽

2017 ◽

Vol 42 (10) ◽

pp. 4365-4381 ◽

Cited By ~ 3

Author(s):

A. S. Abdulkareem ◽

I. Kariim ◽

M. T. Bankole ◽

J. O. Tijani ◽

T. F. Abodunrin ◽

...

Keyword(s):

Carbon Nanotubes ◽

Vapor Deposition ◽

Chemical Vapor ◽

Synthesis And Characterization ◽

Ni Catalyst ◽

Deposition Technique ◽

Vapor Deposition Technique ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Glucose Biosensors Based on Vertically-Aligned Multi-Walled Carbon Nanotubes

MRS Proceedings ◽

10.1557/proc-1204-k13-05 ◽

2009 ◽

Vol 1204 ◽

Cited By ~ 2

Author(s):

Archana Pandey ◽

Abhishek Prasad ◽

Jason Moscatello ◽

Yoke Khin Yap

Keyword(s):

Carbon Nanotubes ◽

Vapor Deposition ◽

Chemical Vapor ◽

Storage Conditions ◽

Biological Molecules ◽

Multiwalled Carbon ◽

Multi Walled Carbon Nanotubes ◽

Vertically Aligned ◽

Walled Carbon Nanotubes

AbstractVertically-aligned multiwalled carbon nanotubes (VA-MWCNTs) were grown using plasma enhanced chemical vapor deposition (PECVD) technique. These VA-MWCNTs were then dip coated by Poly methyl methacrylate (PMMA) followed by annealing. Samples were then polished to expose the tips of CNTs. Biological molecules Glucose Oxidase (GOx) were then immobilized on the exposed tips of these nanoelectrode ensembles. Here we present further characterization of these devices, with results on the detection limits and measurement stability. We found that these sensors can be reused for longer than eight months when kept in proper storage conditions.

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EBSD Analysis of Tungsten-Filament Carburization During the Hot-Wire CVD of Multi-Walled Carbon Nanotubes

Microscopy and Microanalysis ◽

10.1017/s1431927613014001 ◽

2014 ◽

Vol 20 (1) ◽

pp. 4-13 ◽

Cited By ~ 5

Author(s):

Clive J. Oliphant ◽

Christopher J. Arendse ◽

Sigqibo T. Camagu ◽

Hendrik Swart

Keyword(s):

Carbon Nanotubes ◽

Grain Size ◽

Electron Backscatter Diffraction ◽

Chemical Vapor ◽

Deposition Process ◽

Hot Wire ◽

Rate Determining Step ◽

Tungsten Filaments ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

AbstractFilament condition during hot-wire chemical vapor deposition conditions of multi-walled carbon nanotubes is a major concern for a stable deposition process. We report on the novel application of electron backscatter diffraction to characterize the carburization of tungsten filaments. During the synthesis, the W-filaments transform to W2C and WC. W-carbide growth followed a parabolic behavior corresponding to the diffusion of C as the rate-determining step. The grain size of W, W2C, and WC increases with longer exposure time and increasing filament temperature. The grain size of the recrystallizing W-core and W2C phase grows from the perimeter inwardly and this phenomenon is enhanced at filament temperatures in excess of 1,400°C. Cracks appear at filament temperatures >1,600°C, accompanied by a reduction in the filament operational lifetime. The increase of the W2C and recrystallized W-core grain size from the perimeter inwardly is ascribed to a thermal gradient within the filament, which in turn influences the hardness measurements and crack formation.

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