Effect of surface oxygen groups in the electrochemical modification of multi-walled carbon nanotubes by 4-amino phenyl phosphonic acid
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Título: | Effect of surface oxygen groups in the electrochemical modification of multi-walled carbon nanotubes by 4-amino phenyl phosphonic acid |
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Autor/es: | Quintero-Jaime, Andrés Felipe | Cazorla-Amorós, Diego | Morallon, Emilia |
Grupo/s de investigación o GITE: | Electrocatálisis y Electroquímica de Polímeros | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Electrochemical modification | Functionalization | Phosphorus | Nitrogen | MWCNT |
Área/s de conocimiento: | Química Física | Química Inorgánica |
Fecha de publicación: | 15-sep-2020 |
Editor: | Elsevier |
Cita bibliográfica: | Carbon. 2020, 165: 328-339. https://doi.org/10.1016/j.carbon.2020.04.062 |
Resumen: | Electrochemical functionalization of pristine Multi-walled Carbon Nanotubes (MWCNTs) and oxidized MWCNTs by nitric acid with 4-aminophenyl phosphonic acid (4-APPA) has been studied. Electrochemical modification has been carried out by cyclic voltammetry using different upper potential limits, what results in the incorporation of N and P functionalities through oligomerization and covalent attachment. The electrochemical characterization shows that there are important differences among the functionalized materials derived from the pristine MWCNTs or the oxidized materials. For the pristine MWCNTs, well-defined redox processes are observed. Characterization by X-Ray photoelectron spectroscopy, Raman spectroscopy and electron microscopy, show that oligomerization is easier for the pristine MWCNTs and the presence of oligomer chains are clearly distinguished for the lowest oxidation potentials. However, the presence of surface oxygen groups in the oxidized MWCNTs modify the interaction of the 4-APPA with the surface promoting mainly covalent attachment. |
Patrocinador/es: | The authors would like to thank MINECO and FEDER (MAT2016-76595-R) for the financial support. A.F.Q.J. gratefully acknowledges Generalitat Valenciana for the financial support through Santiago Grisolia grant (GRISOLIA/2016/084). |
URI: | http://hdl.handle.net/10045/112587 |
ISSN: | 0008-6223 (Print) | 1873-3891 (Online) |
DOI: | 10.1016/j.carbon.2020.04.062 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 Elsevier Ltd. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1016/j.carbon.2020.04.062 |
Aparece en las colecciones: | INV - GEPE - Artículos de Revistas INV - MCMA - Artículos de Revistas |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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Quintero-Jaime_etal_2020_Carbon_final.pdf | Versión final (acceso restringido) | 4,4 MB | Adobe PDF | Abrir Solicitar una copia |
Quintero-Jaime_etal_2020_Carbon_preprint.pdf | Preprint (acceso abierto) | 3,04 MB | Adobe PDF | Abrir Vista previa |
Quintero-Jaime_etal_2020_Carbon_suppInf.pdf | Supporting Information | 1,39 MB | Adobe PDF | Abrir Vista previa |
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