Fabrication and characterization of fluorinated single-walled carbon nanotubes

Крестинин, А. В.; Kharitonov, A. P.; Shul’ga, Yu. M.; Жигалина, О. М.; Кнерельман, Е. И.; Dubois, Marc; Brzhezinskaya, M. M.; Виноградов, А. С.; Preobrazhenskii, A. B.; Зверева, Г. И.; Kislov, M. B.; Мартыненко, В. М.; Коробов, И. И.; Davydova, G. I.; Zhigalina, V. G.; Киселев, Н.А.

doi:10.1134/s1995078009010078

Cited by 23 publications

(13 citation statements)

References 24 publications

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“…Actually, these species were detected in the spectrum measured at 1486.6 eV (Figure S3, Supporting Information File 1 ). A similar behavior, particularly, a growth of the CF peak intensity with an increase of the excitation energy has been previously observed in the XPS C 1s spectra of fluorinated SWCNTs [ 34 ].…”

Section: Resultssupporting

confidence: 81%

Effect of the fluorination technique on the surface-fluorination patterning of double-walled carbon nanotubes

Bulusheva¹,

Fedoseeva²,

Flahaut³

et al. 2017

Beilstein J. Nanotechnol.

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Double-walled carbon nanotubes (DWCNTs) are fluorinated using (1) fluorine F2 at 200 °C, (2) gaseous BrF3 at room temperature, and (3) CF4 radio-frequency plasma functionalization. These have been comparatively studied using transmission electron microscopy and infrared, Raman, X-ray photoelectron, and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. A formation of covalent C–F bonds and a considerable reduction in the intensity of radial breathing modes from the outer shells of DWCNTs are observed for all samples. Differences in the electronic state of fluorine and the C–F vibrations for three kinds of the fluorinated DWCNTs are attributed to distinct local surroundings of the attached fluorine atoms. Possible fluorine patterns realized through a certain fluorination technique are revealed from comparison of experimental NEXAFS F K-edge spectra with quantum-chemical calculations of various models. It is proposed that fluorination with F2 and BrF3 produces small fully fluorinated areas and short fluorinated chains, respectively, while the treatment with CF4 plasma results in various attached species, including single or paired fluorine atoms and –CF3 groups. The results demonstrate a possibility of different patterning of carbon surfaces through choosing the fluorination method.

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Section: Resultssupporting

confidence: 81%

Effect of the fluorination technique on the surface-fluorination patterning of double-walled carbon nanotubes

Bulusheva¹,

Fedoseeva²,

Flahaut³

et al. 2017

Beilstein J. Nanotechnol.

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“…Even after repeated F 2 treatment at optimal conditions the SWCNTs were not completely dispersed. 28 TEM analysis of our fluorinated DWCNTs shows that average diameter of bundles in the sample fluorinated by CF 4 plasma is nearly the same as that in the pristine sample (∼20 nm), while it decreases to ∼12 nm and ∼8 nm for the samples fluorinated by BrF 3 and F 2 . The higher fluorination rate and deeper fluorine penetration provided by the F 2 gas method compared to the CF 4 plasma method have been previously observed by XPS for graphitized carbon materials.…”

Section: Resultsmentioning

confidence: 76%

Stability of Fluorinated Double-Walled Carbon Nanotubes Produced by Different Fluorination Techniques

et al. 2010

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International audienceDouble-walled carbon nanotubes (DWCNTs) have been fluorinated using (1) gaseous F2 at 200 °C, (2) a mixture of BrF3 and Br2 at room temperature, and (3) radio frequency CF4 plasma. The stability of the resultant samples was examined by thermogravimetric analysis in an inert atmosphere and by comparing the X-ray photoelectron spectra of the pristine samples with those after heating in vacuum at either 70 °C for 10 h or 120 °C for 20 h. The DWCNTs fluorinated by F2 showed the highest stability (the temperature of decomposition is around 396 °C), while the BrF3 and plasma-fluorinated DWCNTs lose fluorine from 150 °C. Prolonged annealing of the fluorinated DWCNTs in vacuum at a temperature below 150 °C also resulted in the defluorination of the samples. Fluorine atoms leave the DWCNT surface together with carbon atoms leading to defects in the graphitic network. These defects are likely to be centers for later functionalization by oxygen-containing groups during DWCNT storage

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“…In the second category of functionalization, the addition of sidewall reactive groups has been shown to lead to a better improvement of the electrical and mechanical properties [55]. One of the most common thermally-activated chemical functionalizations used with direct attachments consists of the fluorination of nanotubes [56][57][58][59][60][61][62] in order to avoid agglomeration of CNTs in the matrix and to increase the surface energy and adhesion properties of the CNTs [55]. The electrochemical modification in the bulk form and single nanotube and photochemical functionalization have also been studied by multiple researchers [63][64][65][66][67][68].…”

Section: Surface Modification/functionalization Of Carbon-based Nanopmentioning

confidence: 99%

Recent advances in carbon-based polymer nanocomposites for electromagnetic interference shielding

Abbasi

Antunes

Velasco

2019

Progress in Materials Science

523

274

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Carbon-based nanoparticles have recently generated a great attention, as they could create polymer nanocomposites with enhanced transport properties, overcoming some limitations of electrically-conductive polymers for high demanding sectors. Particular importance has been given to the protection of electronic components from electromagnetic radiation emitted by other devices. This review considers the recent advances in carbon-based polymer nanocomposites for electromagnetic interference (EMI) shielding. After a revision of the types of carbon-based nanoparticles and respective polymer nanocomposites and preparation methods, the review considers the theoretical models for predicting the EMI shielding, divided in those based on electrical conductivity, models based on the EMI shielding efficiency, on the so-called parallel resistor-capacitor model and those based on multiscale hybrids. Recent advances in the EMI shielding of carbon-based polymer nanocomposites are presented and related to structure and processing, focusing on the effects of nanoparticle's aspect ratio and possible functionalization, dispersion and alignment during processing, as well as the *Manuscript 2 use of nanohybrids and 3D reinforcements. Examples of these effects are presented for nanocomposites with carbon nanotubes/nanofibres and graphene-based materials. A final section is dedicated to cellular nanocomposites, focusing on how the resulting morphology and cellular structures may generate lightweight multifunctional nanocomposites with enhanced absorption-based EMI shielding properties.

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Fabrication and characterization of fluorinated single-walled carbon nanotubes

Cited by 23 publications

References 24 publications

Effect of the fluorination technique on the surface-fluorination patterning of double-walled carbon nanotubes

Effect of the fluorination technique on the surface-fluorination patterning of double-walled carbon nanotubes

Stability of Fluorinated Double-Walled Carbon Nanotubes Produced by Different Fluorination Techniques

Recent advances in carbon-based polymer nanocomposites for electromagnetic interference shielding

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