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Effect of Hydrogen Fluoride Addition and Synthesis Temperature on the Structure of Double-Walled Carbon Nanotubes Fluorinated by Molecular Fluorine

Fedoseeva, Yuliya V. and Dubois, Marc and Flahaut, Emmanuel and Vilkov, Oleg Yu and Chuvilin, Andrey and Asanov, Igor P. and Okotrub, Alexander V. and Bulusheva, Lyubov G. Effect of Hydrogen Fluoride Addition and Synthesis Temperature on the Structure of Double-Walled Carbon Nanotubes Fluorinated by Molecular Fluorine. (2018) physica status solidi b, 255 (1). 1700261. ISSN 0370-1972

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Official URL: https://doi.org/10.1002/pssb.201700261

Abstract

Double‐walled carbon nanotubes (DWCNTs) have been fluorinated by pure molecular fluorine (F2) at room temperature or 200 °C and a mixture of F2 with hydrogen fluoride (HF) at 200 °C that resulted in products with compositions of CF0.12, CF0.39, and CF0.53 as determined by X‐ray photoelectron spectroscopy. The differences in the structures of three kinds of fluorinated DWCNTs were revealed using transmission electron microscopy, Raman scattering, and near‐edge X‐ray absorption fine structure (NEXAFS) spectroscopy. Quantum‐chemical modeling of the NEXAFS F K‐edge spectra detected a change in the fluorine pattern with the increase of the F2 treatment temperature. The presence of HF in fluorine gas was found to accelerate the fluorination process and cause a partial destruction of outer shells of the DWCNTs

Item Type:Article
HAL Id:hal-01707865
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > IKERBASQUE (SPAIN)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Novosibirsk State University (RUSSIA)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Saint Petersburg State University - SPBU (RUSSIA)
Laboratory name:
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Deposited By: cirimat webmestre
Deposited On:21 Dec 2018 10:20

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