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Effets de traitements post-synthèses sur la surface de nanotubes de carbone mono- et multi-parois étudiés par la physisorption de gaz

Abstract : The aim of this study was to understand the influence of various post-synthesis treatments on carbon nanotube surfaces: purification, annealing, ultrasonic cutting, and functionalization. This work deals mainly with rare gas physisorption, but other complementary techniques have also been used such as electron microscopy, thermogravimetric analysis and X-ray diffraction. A systematic approach has been proposed to determine the beginning and the end of the steps (which are usually not well-defined) on the isotherms corresponding to the gas adsorption on single-wall nanotubes. Our results focus in particular on (i) the estimation of the tube opening rate after several of the above mentioned treatments (ii) the validity of the BET method beyond its usual limits and (iii) in the case of functionalization, the selectivity of the grafting process on the carbon nanotube surfaces as opposed to that on the other carbon species present in a sample.
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Theses
File URL :
http://docnum.univ-lorraine.fr/prive/SCD_T_2009_0072_LE.pdf
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https://hal.univ-lorraine.fr/tel-01748454
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Submitted on : Thursday, March 29, 2018 - 11:35:23 AM
Last modification on : Thursday, February 25, 2021 - 11:04:56 AM

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  • HAL Id : tel-01748454, version 1

Citation

Thi Ngoc Ha Le. Effets de traitements post-synthèses sur la surface de nanotubes de carbone mono- et multi-parois étudiés par la physisorption de gaz. Autre. Université Henri Poincaré - Nancy 1, 2009. Français. ⟨NNT : 2009NAN10072⟩. ⟨tel-01748454⟩

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