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http://ipicyt.repositorioinstitucional.mx/jspui/handle/1010/2374| Furan and Pyran Functional Groups Driven the Surface of Nitrogen-Doped Nanofiber Sponges | |
| JUAN LUIS FAJARDO DIAZ CRISTINA DE LOURDES RODRIGUEZ CORVERA Emilio Muñoz Sandoval FLORENTINO LOPEZ URIAS | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| https://doi.org/10.1002/cnma.201900729 | |
| Carbon nanotube sponges Raman-spectroscopy Graphene-oxide Decomposition Performance Electrodes Growth Xps Reduction Mechanism | |
| "Highly surface oxidized, nitrogen‐doped, and nitrogen functionalized carbon nanotube sponge (N‐CFS) were produced at 1020 °C using two sprayers approach in an aerosol‐assisted chemical vapor deposition (AACVD) experiment. The structure of N‐CFS consisted of entangled and corrugated carbon nanofibers of ∼200 nm diameter, also showing junctions and knots. TEM characterizations revealed that the carbon nanofiber exhibits stacked graphitic layers in a transversal way with positive curvature. Superficial chemical analysis by XPS showed that the N‐CFSs contain an atomic concentration of oxygen and nitrogen of 9.2% and 2.9%, respectively. The high‐resolution XPS scans deconvolution‐analysis revealed high percentages for C−O bonds, pyrrolic nitrogen doping, NH3 functionalization, and Si−C interactions. The cyclic voltammetry measurements did not display a redox process despite the high oxygen concentration at the surface. Hydrophobic functional groups containing C−O bonds do not participate in a redox process (furan, pyran, epoxy, methoxy, ethoxy, among others) could mostly determine the electroactivity of N‐CFS. Based on density functional theory calculations, we determine that the furans transfer a high amount of electron and promote a positive curvature in thin carbon nanotubes. Graphitic materials with furans, pyrans, and epoxy functional groups could be used as an anode in lithium‐ion batteries." | |
| Wiley | |
| 2020 | |
| Artículo | |
| M.S. J. L. Fajardo-Díaz, M.S. C. L. Rodríguez-Corvera, P.D. E. Muñoz-Sandoval, P.D. F. López-Urías, ChemNanoMat 2020, 6, 672. | |
| QUÍMICA | |
| Versión aceptada | |
| acceptedVersion - Versión aceptada | |
| Aparece en las colecciones: | Publicaciones Científicas Nanociencias y Materiales |
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| ChemNanoMat6(2020)672.pdf | 3.14 MB | Adobe PDF | Visualizar/Abrir |