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

dc.contributor.authorVega Díaz, Sofía Magdalena
dc.contributor.authorGonzález Velázquez, Viviana Jehová
dc.contributor.authorMorelos Gómez, Aarón
dc.contributor.authorTristán López, Ferdinando
dc.contributor.authorLabrada Delgado, Gladis Judith
dc.contributor.authorRivera Escoto, Beatriz Adriana
dc.contributor.authorSánchez Salas, Roque
dc.contributor.authorCortés López, Alejandro Javier
dc.contributor.authorFajardo Díaz, Juan Luis
dc.contributor.authorLópez Urías, Florentino
dc.contributor.authorTerrones Maldonado, Mauricio
dc.contributor.authorMuñoz Sandoval, Emilio
dc.identifier.citationSofía Magdalena Vega-Díaz et al 2020 Mater. Res. Express 7 025602
dc.description.abstract"We demonstrated that the ball-milled slag-SiC mixture is an effective catalyst to grow pyrrolic nitrogen-doped multiwall carbon nanotubes (N-MWCNTs) by aerosol assisted chemical vapor deposition (AACVD) method. N-MWCNTs synthesized at 800 °C, 850 °C and 900 °C were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, x-ray powder diffraction (XRD), and x-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis (TGA). TEM characterizations revealed the presence of a bamboo-like structure, a typical feature of nitrogen-doped carbon nanotubes. The presence of nitrogen was confirmed by the N1s XPS spectrum. Furthermore, a deconvolution of the N1s spectra revealed the presence of N-pyrrolic defects. This nitrogen functionality is investigated concerning the presence of silicon carbide material. Giant nanotubes with large diameters were obtained when SiC was added to the slag to be used as a substrate for N-MWCNTs synthesis. From Raman spectroscopy, the appearance of the D-band was observed, indicating the presence of topological defects that were also observed by TEM. XRD and TEM characterizations demonstrated the presence of Fe3C and α-Fe nanoparticles. The N-MWCNTs fabricated here could be used into (electro)catalytic applications or for reinforcing ceramic nanomaterial or polymers."
dc.publisherIOP Publishing
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.subjectCarbon nanotubes
dc.titlePyrrolic nitrogen-doped multiwall carbon nanotubes using ball-milled slag-SiC mixtures as a catalyst by aerosol assisted chemical vapor deposition
dc.rights.accessAcceso Abierto

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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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