Issue 19, 2015

Functional carbon nanotubes for high-quality charge transfer and moisture regulation through membranes: structural and functional insights

Abstract

Functional single walled carbon nanotubes (SWCNTs) are assembled onto porous supports by using layer-by-layer (LBL) approaches. Directed nano-assembly of nanotubes is identified as a crucial factor for controlling the combined functions of hybrid-composite membranes, including charge and moisture transport. In both the cases, donor–acceptor interactions are indicated to be responsible for the rearrangement of nanotubes inside the LBL multilayer and their related properties. Aggregation and stratification of the carbon nanotubes along with the availability of selective-site interactions are complementarily investigated by using SEM, Raman and infrared spectroscopy, while high electrical charge and water vapor transfer are achievable, provided that a large number of connections and competitive interactions are allowed. Ohmic behavior is observed for all types of carbon nanotubes, even if better-quality charge transfer pathways are obtained with carboxylated conductive filaments. Likewise, assisted moisture regulation is succeeded when using functional filaments with the capability to establish competitive H-donor–acceptor interactions with water.

Graphical abstract: Functional carbon nanotubes for high-quality charge transfer and moisture regulation through membranes: structural and functional insights

Article information

Article type
Paper
Submitted
05 Feb 2015
Accepted
13 Apr 2015
First published
13 Apr 2015

Phys. Chem. Chem. Phys., 2015,17, 12919-12926

Functional carbon nanotubes for high-quality charge transfer and moisture regulation through membranes: structural and functional insights

A. Gugliuzza, V. Pingitore, D. Miriello and E. Drioli, Phys. Chem. Chem. Phys., 2015, 17, 12919 DOI: 10.1039/C5CP00750J

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