Effect of NH3 gas ratio on the formation of nitrogen-doped carbon nanotubes using thermal chemical vapor deposition

2016 ◽  
Vol 183 ◽  
pp. 315-319 ◽  
Author(s):  
Chang-duk Kim ◽  
Hyeong-Rag Lee ◽  
Hong Tak Kim
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Thermal Chemical Vapor Deposition ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Gas Ratio

Lanthanum nickel alloy catalyzed growth of nitrogen-doped carbon nanotubes by chemical vapor deposition

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20554-20566 ◽  
Author(s):  
John Anthuvan Rajesh ◽  
Arumugam Pandurangan
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Nickel Alloy ◽  
Growth Mechanism ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Dissolution And Precipitation ◽  
Alloy Catalyst

CNTs doped with large amounts of nitrogen were produced on a LaNi5 alloy catalyst by CVD and its growth mechanism discussed on the basis of dissolution and precipitation mechanisms.

Structure Controlled Synthesis of Vertically Aligned Carbon Nanotubes Using Thermal Chemical Vapor Deposition Process

2010 ◽  
Vol 133 (3) ◽  
Author(s):  
Myung Gwan Hahm ◽  
Young-Kyun Kwon ◽  
Ahmed Busnaina ◽  
Yung Joon Jung
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Large Scale ◽  
Chemical Vapor ◽  
Controlled Synthesis ◽  
Full Potential ◽  
Thermal Chemical Vapor Deposition ◽  
Vertically Aligned ◽  
Walled Carbon Nanotubes

Due to their unique one-dimensional nanostructure along with excellent mechanical, electrical, and optical properties, carbon nanotubes (CNTs) become a promising material for diverse nanotechnology applications. However, large-scale and structure controlled synthesis of CNTs still have many difficulties due to the lack of understanding of the fundamental growth mechanism of CNTs, as well as the difficulty of controlling atomic-scale physical and chemical reactions during the nanotube growth process. Especially, controlling the number of graphene wall, diameter, and chirality of CNTs are the most important issues that need to be solved to harness the full potential of CNTs. Here we report the large-scale selective synthesis of vertically aligned single walled carbon nanotubes (SWNTs) and double walled carbon nanotubes (DWNTs) by controlling the size of catalyst nanoparticles in the highly effective oxygen assisted thermal chemical vapor deposition (CVD) process. We also demonstrate a simple but powerful strategy for synthesizing ultrahigh density and diameter selected vertically aligned SWNTs through the precise control of carbon flow during a thermal CVD process.

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