Composites of polyvinyl alcohol and carbon (coils, undoped and nitrogen doped multiwalled carbon nanotubes) as ethanol, methanol and toluene vapor sensors
Date
2011
Authors
Greenshields M.W.C.C.
Hummelgen I.A.
Mamo M.A.
Shaikjee A.
Mhlanga S.D.
Van Otterlo W.A.L.
Coville N.J.
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Abstract
We investigate the chemical sensing behavior of composites prepared with polyvinyl alcohol and carbon materials (undoped multiwalled carbon nanotubes, nitrogen-doped multiwalled carbon nanotubes and carbon nanocoils). We determine the sensitivity of thin films of these composites for ethanol, methanol and toluene vapor, comparing their conductance and capacitance responses. The composite that exhibits highest sensitivity depends on specific vapor, vapor concentration and measured electrical response, showing that the interactivity of the carbon structure with chemical species depend on structural specificities of the carbon structure and doping. © 2011 American Scientific Publishers. All rights reserved.
Description
Keywords
Carbon Nanocoils, Carbon Nanotubes, Electrical Properties, Polymers, Sensors
Citation
Journal of Nanoscience and Nanotechnology
11
11
10211
10218
11
11
10211
10218