Graphene/polyaniline nanocomposite for hydrogen sensing

Al-Mashat, L, Shin, K, Kalantar Zadeh, K, Du Plessis, J, Han, S, Kojima, R, Kaner, R, Li, D, Gou, X, Ippolito, S and Wlodarski, W 2010, 'Graphene/polyaniline nanocomposite for hydrogen sensing', Journal of Physical Chemistry C, vol. 114, no. 39, pp. 16168-16173.

Document type: Journal Article
Collection: Journal Articles

Title Graphene/polyaniline nanocomposite for hydrogen sensing
Author(s) Al-Mashat, L
Shin, K
Kalantar Zadeh, K
Du Plessis, J
Han, S
Kojima, R
Kaner, R
Li, D
Gou, X
Ippolito, S
Wlodarski, W
Year 2010
Journal name Journal of Physical Chemistry C
Volume number 114
Issue number 39
Start page 16168
End page 16173
Total pages 6
Publisher American Chemical Society
Abstract Here we report on the synthesis of a graphene/polyaniline (PANI) nanocomposite and its application in the development of a hydrogen (H 2) gas sensor. Using a chemical synthetic route, graphene was prepared and ultrasonicated with a mixture of aniline monomer and ammonium persulfate to form PANI on its surface. The developed material was characterized by scanning electron microscopy (SEM), transmission electron microscopy, Raman spectroscopy, and X-ray photoemission spectroscopy. The SEM study revealed that the PANI in the composite has a nanofibrillar morphology. We investigated the H2 gas sensing performance of this material and compare it with that of the sensors based on only graphene sheets and PANI nanofibers. We found that the graphene/PANI nanocomposite-based device sensitivity is 16.57% toward 1% of H2 gas, which is much larger than the sensitivities of sensors based on only graphene sheets and PANI nanofibers.
Keyword(s) Ammonium persulfate
Aniline monomers
Device sensitivity
Gas sensing
Gas sensors
Graphene sheets
SEM study
Synthetic routes
X ray photoemission spectroscopy
DOI - identifier 10.1021/jp103134u
Copyright notice © 2010 American Chemical Society.
ISSN 1932-7447
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