Hierarchical Nafion enhanced carbon aerogels for sensing applications

Weng, Bo, Ding, Ailing, Liu, Yuqing, Diao, Jianglin, Razal, Joselito, Lau, King Tong, Shepherd, Roderick, Li, Changming and Chen, Jun 2016, Hierarchical Nafion enhanced carbon aerogels for sensing applications, Nanoscale, vol. 8, no. 6, pp. 3416-3424, doi: 10.1039/c5nr08631k.

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Title Hierarchical Nafion enhanced carbon aerogels for sensing applications
Author(s) Weng, Bo
Ding, Ailing
Liu, Yuqing
Diao, Jianglin
Razal, JoselitoORCID iD for Razal, Joselito orcid.org/0000-0002-9758-3702
Lau, King Tong
Shepherd, Roderick
Li, Changming
Chen, Jun
Journal name Nanoscale
Volume number 8
Issue number 6
Start page 3416
End page 3424
Total pages 9
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2016-02-14
ISSN 2040-3364
Summary This work describes the fabrication of hierarchical 3D Nafion enhanced carbon aerogels (NECAGs) for sensing applications via a fast freeze drying method. Graphene oxide, multiwalled carbon nanotubes and Nafion were mixed and extruded into liquid nitrogen followed by the removal of ice crystals by freeze drying. The addition of Nafion enhanced the mechanical strength of NECAGs and effective control of the cellular morphology and pore size was achieved. The resultant NECAGs demonstrated high strength, low density, and high specific surface area and can achieve a modulus of 20 kPa, an electrical conductivity of 140 S m(-1), and a specific capacity of 136.8 F g(-1) after reduction. Therefore, NECAG monoliths performed well as a gas sensor and as a biosensor with high sensitivity and selectivity. The remarkable sensitivity of 8.52 × 10(3)μA mM(-1) cm(-2) was obtained in dopamine (DA) detection, which is two orders of magnitude better than the literature reported values using graphene aerogel electrodes made from a porous Ni template. These outstanding properties make the NECAG a promising electrode candidate for a wide range of applications. Further in-depth investigations are being undertaken to probe the structure-property relationship of NECAG monoliths prepared under various conditions.
Language eng
DOI 10.1039/c5nr08631k
Field of Research 091202 Composite and Hybrid Materials
100708 Nanomaterials
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID FT130100380
Copyright notice ©2016, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083891

Document type: Journal Article
Collections: Institute for Frontier Materials
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