Effect of the manufacturing parameters on the structure of nitrogen-doped carbon nanotubes produced by catalytic laser-induced chemical vapor deposition

2013 ◽  
Vol 15 (11) ◽  
Author(s):  
Iuliana P. Morjan ◽  
Rodica Alexandrescu ◽  
Ion Morjan ◽  
Catalin Luculescu ◽  
Eugeniu Vasile ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Manufacturing Parameters

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.

scholarly journals Pyrrolic nitrogen-doped multiwall carbon nanotubes using ball-milled slag-SiC mixtures as a catalyst by aerosol assisted chemical vapor deposition

2020 ◽  
Author(s):  
Sofía Magdalena Vega-Diaz ◽  
Viviana Jehová González ◽  
Aaron Morelos-Gomez ◽  
Ferdinando Tristán-López ◽  
Gladis Judith Labrada-Delgado ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Vapor ◽  
Nitrogen Doped ◽  
Multiwall Carbon

scholarly journals Magnetic and Electrical Properties of Nitrogen-Doped Multiwall Carbon Nanotubes Fabricated by a Modified Chemical Vapor Deposition Method

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
María Luisa García-Betancourt ◽  
Yadira Itzel Vega-Cantu ◽  
Sofía Magdalena Vega-Díaz ◽  
Aarón Morelos-Gómez ◽  
Mauricio Terrones ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Morphological Changes ◽  
Multiwall Carbon Nanotubes ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Method ◽  
Nitrogen Doped ◽  
Multiwall Carbon

Chemical vapor deposition (CVD) is a preferential method to fabricate carbon nanotubes (CNTs). Several changes have been proposed to obtain improved CNTs. In this work we have fabricated nitrogen-doped multiwall carbon nanotubes (N-MWCNTs) by means of a CVD which has been slightly modified. Such modification consists in changing the content of the by-product trap. Instead of acetone, we have half-filled the trap with an aqueous solution of NaCl (0–26.82 wt.%). Scanning electron microscope (SEM) characterization showed morphological changes depending upon concentration of NaCl included in the trap. Using high resolution transmission electron microscopy several shape changes on the catalyst nanoparticles were also observed. According to Raman spectroscopy results N-MWCNTs fabricated using pure distillate water exhibit better crystallinity. Resistivity measurements performed on different samples by physical properties measurement Evercool system (PPMS) showed metallic to semiconducting temperature dependent transitions when high content of NaCl is used. Results of magnetic properties show a ferromagnetic response to static magnetic fields and the coercive fields were very similar for all the studied cases. However, saturation magnetization is decreased if aqueous solution of NaCl is used in the trap.

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