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Acosta, S., Casanova-Chafer, J., Sierra-Castillo, A., Llobet, E., Snyders, R., Colomer, J.-F., Quintana, M., Ewels, C. & Bittencourt, C. (2019) Low Kinetic Energy Oxygen Ion Irradiation of Vertically Aligned Carbon Nanotubes. Appl. Sci.-Basel, 9 5342. 
Added by: Richard Baschera (2020-04-10 12:48:50)   Last edited by: Richard Baschera (2020-04-10 12:58:21)
Type de référence: Article
DOI: 10.3390/app9245342
Clé BibTeX: Acosta2019
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Catégories: INTERNATIONAL, PMN
Mots-clés: carbon nanotubes, catalysts, Defects, electron, functionalization, implantation, ion irradiation, oxidation
Créateurs: Acosta, Bittencourt, Casanova-Chafer, Colomer, Ewels, Llobet, Quintana, Sierra-Castillo, Snyders
Collection: Appl. Sci.-Basel
Consultations : 6/186
Indice de consultation : 2%
Indice de popularité : 0.5%
Résumé     
Vertically aligned multiwalled carbon nanotubes (v-CNTs) were functionalized with oxygen groups using low kinetic energy oxygen ion irradiation. X-ray photoelectron spectroscopy (XPS) analysis indicates that oxygen ion irradiation produces three different types of oxygen functional groups at the CNTs surface: epoxide, carbonyl and carboxyl groups. The relative concentration of these groups depends on the parameters used for oxygen ion irradiation. Scanning electron microscopy (SEM) shows that the macroscopic structure and alignment of v-CNTS are not affected by the ion irradiation and transmission electron microscopy (TEM) proves tip functionalization of v-CNTs. We observed that in comparison to oxygen plasma treatment, oxygen ion irradiation shows higher functionalization efficiency and versatility. Ion irradiation leads to higher amount of oxygen grafting at the v-CNTs surface, besides different functional groups and their relative concentration can be tuned varying the irradiation parameters.
  
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