AustralieFrV1, Main, Exploration, bibRecord, 006B31

Enhanced durability and hydrophobicity of carbon nanotube bucky paper membranes in membrane distillation

Identifieur interne : 006B31 ( Main/Exploration ); précédent : 006B30; suivant : 006B32

Enhanced durability and hydrophobicity of carbon nanotube bucky paper membranes in membrane distillation

Auteurs : Ludovic Dumee [Australie] ; Vincent Germain [France] ; Kallista Sears [Australie] ; Jürg Schütz [Australie] ; Niall Finn [Australie] ; Mikel Duke [Australie] ; Sophie Cerneaux [France] ; David Cornu [France] ; Stephen Gray [Australie]

Source :

Journal of membrane science [ 0376-7388 ] ; 2011.

RBID : Pascal:11-0299500

Descripteurs français

Pascal (Inist)
- Durabilité, Hydrophobicité, Nanotube carbone, Distillation par membrane, Membrane, Structure, Eau, Porosité, Aire superficielle, Séparation, Stabilité, Pureté, Ozone, Groupe hydroxyle, Substitution, Silicium, Angle contact, Liquide.
Wicri :
- topic : Eau, Ozone.

English descriptors

KwdEn :
- Carbon nanotubes, Contact angle, Durability, Hydrophobicity, Hydroxyl group, Liquid, Membrane, Membrane distillation, Ozone, Porosity, Purity, Separation, Silicon, Stability, Structure, Substitution, Surface area, Water.

Abstract

Recent work showed that carbon nanotubes could be fabricated into bucky-paper structures as self-supporting membranes and their hydrophobic property used for water desalination by membrane distillation. Carbon nanotube bucky-papers possess very interesting properties such as natural hydrophobicity, high porosity and very high specific surface area, making of them promising candidates for separation applications. However, to inhibit crack formation associated with poor mechanical stability, improved durability structures that retain a high degree of hydrophobicity need to be developed. In this work we chemically modified high purity carbon nanotubes by (i) UV/ozone treatment to create hydroxyl groups and (ii) reacting those groups by substitution with alkoxysilane based groups. The resulting nanotubes presented a silicon content up to 2.5% and the bucky-papers produced had larger contact angle (140° compared to 125_°) and liquid entry pressures. We report here on their fabrication and use as membranes in direct contact membrane distillation.

Affiliations:

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Le document en format XML

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<term>Membrane distillation</term>
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<front><div type="abstract" xml:lang="en">Recent work showed that carbon nanotubes could be fabricated into bucky-paper structures as self-supporting membranes and their hydrophobic property used for water desalination by membrane distillation. Carbon nanotube bucky-papers possess very interesting properties such as natural hydrophobicity, high porosity and very high specific surface area, making of them promising candidates for separation applications. However, to inhibit crack formation associated with poor mechanical stability, improved durability structures that retain a high degree of hydrophobicity need to be developed. In this work we chemically modified high purity carbon nanotubes by (i) UV/ozone treatment to create hydroxyl groups and (ii) reacting those groups by substitution with alkoxysilane based groups. The resulting nanotubes presented a silicon content up to 2.5% and the bucky-papers produced had larger contact angle (140° compared to 125<sub>°</sub>
) and liquid entry pressures. We report here on their fabrication and use as membranes in direct contact membrane distillation.</div>
</front>
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Enhanced durability and hydrophobicity of carbon nanotube bucky paper membranes in membrane distillation

Enhanced durability and hydrophobicity of carbon nanotube bucky paper membranes in membrane distillation

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri