Adsorption of cadmium and lead onto oxidized nitrogen-doped multiwall carbon nanotubes in aqueous solution: equilibrium and kinetics

2009 ◽  
Vol 12 (2) ◽  
pp. 467-480 ◽  
Author(s):  
Nancy Veronica Perez-Aguilar ◽  
Emilio Muñoz-Sandoval ◽  
Paola Elizabeth Diaz-Flores ◽  
Jose Rene Rangel-Mendez
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Multiwall Carbon Nanotubes ◽  
Solution Equilibrium ◽  
Nitrogen Doped ◽  
Equilibrium And Kinetics ◽  
Cadmium And Lead ◽  
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.

A co-pyrolysis route to synthesize nitrogen doped multiwall carbon nanotubes for oxygen reduction reaction

Carbon ◽  
2014 ◽  
Vol 68 ◽  
pp. 232-239 ◽  
Author(s):  
Yongxia Wang ◽  
Xiangzhi Cui ◽  
Yongsheng Li ◽  
Lisong Chen ◽  
Hangrong Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Multiwall Carbon Nanotubes ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Multiwall Carbon

scholarly journals Application of oxidized multiwall carbon nanotubes as a novel adsorbent for removal of Acid Red 18 dye from aqueous solution

2012 ◽  
Vol 4 (3) ◽  
pp. 335-346 ◽  
Author(s):  
M Shirmardi ◽  
F Khodarahmi ◽  
M Heidari Farsani ◽  
A Naeimabadi ◽  
M Vosughi Niri ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon
Sign in / Sign up

Export Citation Format

Share Document