Effect of Catalyst Calcination Temperature on the Synthesis of MWCNTs-Talc Hybrid Compound Using CVD Method

2013 ◽  
Vol 594-595 ◽  
pp. 63-67
Author(s):  
Siti Shuhadah Mohd Saleh ◽  
Hazizan Md Akil ◽  
Ramdziah Md. Nasir ◽  
Muhammad Razlan Zakaria ◽  
Muhammad Helmi Abdul Kudus
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Source ◽  
Calcination Temperature ◽  
Chemical Vapour ◽  
Catalytic Decomposition ◽  
Metal Catalyst ◽  
Hybrid Compound ◽  
Calcination Temperatures ◽  
Cvd Method ◽  
Multi Walled Carbon Nanotubes

Carbon nanotubes-talc (CNTs-talc) hybrid compound has been successfully synthesized via chemical vapour deposition (CVD) method. A gas mixture of methane/nitrogen (CH4/N2) was used as the carbon source and nickel as the metal catalyst for the growth of CNT hybrid compound. Talc works as substrate or support material which is combined with nickel to form a complex metal-talc catalyst that will react with carbon source to produce the hybrid compound. To study the effect of different calcinations temperature, four different calcinations temperature, 300 °C (C-talc300), 500 °C (C-talc500), 700 °C (C-talc700) and 900 °C (C-talc900) were used. Among these four calcination temperatures for synthesis the multi-walled carbon nanotubes (MWCNTs), C-talc500 is the most optimum calcination temperature to perform catalytic decomposition by reacting in methane atmosphere at 800 °C to produce the CNT-talc hybrid compound.

Influence of Processing on the Properties of Carbon Nanotubes/Alumina Hybrid Compound Filled PDMS Composites

2013 ◽  
Vol 812 ◽  
pp. 198-203 ◽  
Author(s):  
Nosbi Norlin ◽  
Md Akil Hazizan
Keyword(s):  
Carbon Nanotubes ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Multiwall Carbon Nanotubes ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry ◽  
Hybrid Compound ◽  
Vacuum Oven ◽  
Cvd Method ◽  
Multiwall Carbon

The aim of this study is to investigate the properties of Polydimethylsiloxane (PDMS)/MWCNT-Al2O3 nanocomposites. The multiwall carbon nanotubes MWCNT-Al2O3 hybrid compound was synthesized using chemical vapour deposition (CVD) method. The nanocomposites were produced by using Sonicator (ultrasonic processor) instrument and followed by casting in the vacuum oven. The content of MWCNT-Al2O3 was varied between 0.5 and 1.5% by weight. The results showed that the MWCNT-Al2O3 was well dispersed in PDMS. The interaction between PDMS and MWCNT-Al2O3 was investigated using Fourier transform infrared spectrometry (FTIR). The mechanical properties of the composite were examined by tensile test. The results showed that the greater of MWCNT-Al2O3 hybrid compound in PDMS composites resulted in lower tensile properties.

A Study on the Effect of Calcination Temperature on the Graphitization of Carbon Nanotubes Synthesized by the Decomposition of Methane

2013 ◽  
Vol 832 ◽  
pp. 56-61 ◽  
Author(s):  
Wei Wen Liu ◽  
Tijjani Adam ◽  
Azizan Aziz ◽  
Siang Piao Chai ◽  
Abdul Rahman Mohamed ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Calcination Temperature ◽  
Catalytic Decomposition ◽  
Average Diameter ◽  
Calcination Temperatures ◽  
Transmission Electron ◽  
Different Temperatures ◽  
Decomposition Of Methane

The effect of calcination temperature for Fe2O3/MgO catalysts on the formation of carbon nanotubes (CNTs) was examined. CNTs were synthesized over Fe2O3/MgO catalysts calcined at different temperatures by catalytic decomposition of methane at 1000°C. The synthesized CNTs were investigated by a combination of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy. The results show that the effect of calcination temperatures greatly governed the diameter and the quality of the SWCNTs formed. The catalysts calcined at 500, 600 and 700°C produced CNTswith the diameters of 1.53, 1.95 and 2.97nm, respectively. Generally, an increase in the calcination temperature increases the average diameter and decreases the quality of the CNTs produced.

scholarly journals The Investigating the red phenol absorption by multi-walled carbon nanotubes

2020 ◽  
Vol 4 (1) ◽  
pp. First
Author(s):  
Huynh Anh Hoang ◽  
Huynh Quyen
Keyword(s):  
Carbon Nanotubes ◽  
Langmuir Isotherm ◽  
Full Potential ◽  
Liquefied Petroleum Gas ◽  
Research Results ◽  
Cvd Method ◽  
Multi Walled Carbon Nanotubes ◽  
Hydrocarbon Gas ◽  
Walled Carbon Nanotubes

Since the end of the 20th century, nanomaterials such as carbon nanotubes (CNTs) have been considered as one of the greatest achievements in the field of material science. Nowadays, further research on CNTs is still being conducted to unfold the full potential of this material. Generally, CNTs production methods have been extensively studied, specifically on CNTs synthesis route via liquefied hydrocarbon gas in the presence of a catalyst. From the synthesized material, further investigation including characterization and investigation of this nano size system’s effects on the physics, chemical, mechanical rules applied to macroscopic (bulk materials) and microscopic systems (atoms, molecules). In this present work, we demonstrated the research results of the synthesis of nano-carbon materials from a liquefied hydrocarbon gas (Liquefied Petroleum Gas: LPG) and its application to red phenol absorption in the liquid phase. CNTs used in this study were synthesized by chemical vapor deposition (CVD) method with Fe /ℽ-Al2O3 as the catalyst. The research results demonstrated that CNTs synthesized from LPG in this work were reported to be multi-walled tubes (MWCNTs: Multi-Walled Carbon Nanotubes) with physical characteristics including average internal and external diameters were of 6 nm and 17 nm, respectively. The measured specific surface suggested by BET data was 200 m2/g. The experimental study of red phenol adsorption by MWCNTs showed that the adsorption process followed both Freundlich and Langmuir isotherm adsorption models with the maximum monolayer adsorption capacity of 47.2 mg/g. The research results again showed that it was possible to synthesize MWCNTs from hydrocarbon gas sources via the CVD method by utilizing catalysts. Additionally, red phenol absorption via such material had shown to follow both Freundlich and Langmuir isotherm model, which allow further characterization of this material using Raman, EDX, SEM, TEM, BET, in order to extend the library database on the characterization of the reported synthesized material.

The use of calcination in exposing the entrapped Fe particles from multi-walled carbon nanotubes grown by chemical vapour deposition

2008 ◽  
Vol 94 (3) ◽  
pp. 585-591 ◽  
Author(s):  
Sreejarani K. Pillai ◽  
Letlhogonolo Matlhoko ◽  
Chris Arendse ◽  
Suprakas Sinha Ray ◽  
Mathew Moodley
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Synthesis of Carbon Nanotubes from Polycyclic Compounds by CVD Method

2006 ◽  
Vol 320 ◽  
pp. 163-166 ◽  
Author(s):  
Koji Yamada ◽  
Kentaro Abe ◽  
Masafumi Mikami ◽  
Morihiro Saito ◽  
Jun Kuwano
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Quartz Substrate ◽  
Chemical Vapor ◽  
Polycyclic Compounds ◽  
Cvd Method ◽  
Multi Walled Carbon Nanotubes ◽  
Synthesis Of Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Multi-walled carbon nanotubes (MWCNTs) were synthesized from camphor by a chemical vapor deposition (CVD) method in a range of 750-900. The catalyst was fed in three ways: (a) a sputtered Fe-film on a quartz substrate (b) vaporized ferrocene in an Ar flow; (c) both of (a) and (b). In the case (c), highly pure, dense and aligned MWCNT arrays formed on the quartz substrate at 850, whereas nonaligned MWCNTs formed in the cases (a) and (b).

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