Control of porosity and pore size of metal reinforced carbon nanotube membranes

Dumee, Ludovic, Velleman, Leonora, Sears, Kallista, Hill, Matthew, Schutz, Jurg, Finn, Niall, Duke, Mikel and Gray, Stephen 2011, Control of porosity and pore size of metal reinforced carbon nanotube membranes, Materials, vol. 1, no. 1, pp. 25-36.

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Title Control of porosity and pore size of metal reinforced carbon nanotube membranes
Author(s) Dumee, Ludovic
Velleman, Leonora
Sears, Kallista
Hill, Matthew
Schutz, Jurg
Finn, Niall
Duke, Mikel
Gray, Stephen
Journal name Materials
Volume number 1
Issue number 1
Start page 25
End page 36
Total pages 12
Publisher M D P I AG
Place of publication Basel, Switzerland
Publication date 2011
ISSN 1996-1944
Keyword(s) carbon nanotube
nano-composite
gold
electroless plating
porosity
Summary Membranes are crucial in modern industry and both new technologies and materials need to be designed to achieve higher selectivity and performance. Exotic materials such as nanoparticles offer promising perspectives, and combining both their very high specific surface area and the possibility to incorporate them into macrostructures have already shown to substantially increase the membrane performance. In this paper we report on the fabrication and engineering of metal-reinforced carbon nanotube (CNT) Bucky-Paper (BP) composites with tuneable porosity and surface pore size. A BP is an entangled mesh non-woven like structure of nanotubes. Pure CNT BPs present both very high porosity (>90%) and specific surface area (>400 m2/g). Furthermore, their pore size is generally between 20–50 nm making them promising candidates for various membrane and separation applications. Both electro-plating and electroless plating techniques were used to plate different series of BPs and offered various degrees of success. Here we will report mainly on electroless plated gold/CNT composites. The benefit of this method resides in the versatility of the plating and the opportunity to tune both average pore size and porosity of the structure with a high degree of reproducibility. The CNT BPs were first oxidized by short UV/O3 treatment, followed by successive immersion in different plating solutions. The morphology and properties of these samples has been investigated and their performance in air permeation and gas adsorption will be reported.
Language eng
Field of Research 091202 Composite and Hybrid Materials
091207 Metals and Alloy Materials
100701 Environmental Nanotechnology
Socio Economic Objective 861299 Fabricated Metal Products not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30054714

Document type: Journal Article
Collection: Institute for Frontier Materials
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