scholarly journals Towards the low temperature growth of uniform diameter multi walled carbon nanotubes by catalytic chemical vapour deposition technique

2010 ◽  
Vol 2 (3) ◽  
pp. 204-212 ◽  
Author(s):  
Thirunavukkarasu Somanathan ◽  
Arumugam Pandurangan
Keyword(s):  
Carbon Nanotubes ◽  
Low Temperature ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Deposition Technique ◽  
Temperature Growth ◽  
Chemical Vapour Deposition Technique ◽  
Multi Walled Carbon Nanotubes ◽  
Uniform Diameter ◽  
Walled Carbon Nanotubes

scholarly journals Optimization of growth temperature of multi-walled carbon nanotubes fabricated by chemical vapour deposition and their application for arsenic removal

2014 ◽  
Vol 32 (4) ◽  
pp. 709-718 ◽  
Author(s):  
S. Mageswari ◽  
S. Kalaiselvan ◽  
P. Syed Shabudeen ◽  
N. Sivakumar ◽  
S. Karthikeyan
Keyword(s):  
Carbon Nanotubes ◽  
Electron Microscope ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Spectral Studies ◽  
Outer Diameter ◽  
Chemical Vapour Deposition Technique ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

AbstractMulti-walled carbon nanotubes have been synthesized at different temperatures ranging from 550 °C to 750 °C on silica supported Fe-Mo catalyst by chemical vapour deposition technique using Cymbopogen flexuous oil under nitrogen atmosphere. The as-grown MWNTs were characterized by scanning electron microscope (SEM), high resolution transmission electron microscope (HRTEM), X-ray diffraction analysis (XRD) and Raman spectral studies. The HRTEM and Raman spectroscopic studies confirmed the evolution of MWNTs with the outer diameter between 20 and 40 nm. The possibility of using as-grown MWNTs as an adsorbent for removal of As (V) ions from drinking water was studied. Adsorption isotherm data were interpreted by the Langmuir and Freundlich equations. Kinetic data were studied using Elovich, pseudo-first order and pseudo-second order equations in order to elucidate the reaction mechanism.

Synthesis of Large Carbon Nanotubes from Ferrocene: The Chemical Vapour Deposition Technique

2011 ◽  
Vol 6 (11) ◽  
pp. 1270-1279 ◽  
Author(s):  
Clarence S. Yah ◽  
Geoffrey S. Simate ◽  
Kapil Moothi ◽  
Kwena S. Maphutha ◽  
Sunny E. Iyuke
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapour Deposition ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Deposition Technique ◽  
Chemical Vapour Deposition Technique

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

Effect of Ferrocene Catalyst and Hydrogen Feed on Microstructures of Vertically Aligned MWCNTs

2016 ◽  
Vol 701 ◽  
pp. 8-12
Author(s):  
Shazia Shukrullah ◽  
Norani Muti Mohamed ◽  
Maizatul Shima Shaharun ◽  
Muhammad Yasar
Keyword(s):  
Carbon Nanotubes ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Areal Density ◽  
Optimum Conditions ◽  
Catalyst Amount ◽  
Multi Walled Carbon Nanotubes ◽  
Cvd Growth ◽  
Vertically Aligned ◽  
Walled Carbon Nanotubes

This study investigated the effect of catalyst amount on chemical vapour deposition (CVD) growth of multi-walled carbon nanotubes (MWCNTs) with and without hydrogen feed. The ferrocene weight was varied from 100 mg to 200 mg for CNTs growth over Si/SiO2/Al2O3 substrate. Very few CNTs were seen in micrographs of the samples produced in the absence of the hydrogen feed. Most of the carbon atoms precipitated into amorphous carbon due to existence of inactive catalyst particles. However, CNT structures grown with hydrogen feed were more distinct; the nanotubes were thinner, straight and highly crystalline. MWCNTs arrays/forest length was also increased from 120 µm to 850 µm with hydrogen feed. An increase in catalyst weight significantly affected the diameter, crystallinity, alignment and growth of nanotubes. The lowest inner-shell spacing of 0.348 nm was obtained with 150 mg of ferrocene, which is an indication of growth of relatively pure CNTs. Under the optimum conditions, the areal density of the ferrocene particles was sufficiently increased to get required alignment and crystallinity of MWCNTs.

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