P1.4.12 Synthesis of polyaniline/carbon nanotubes nanocomposites and their sensing properties to methylamine
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.4 Nanostructured Sensors
- Author(s)
- J. Wojkiewicz - Université Lille Nord de France, Douai (France), A. Pud, Y. Noskov - Institute of Bioorg. Chem. and Petrochem. of NASU (Ukraine), V. Bliznyuk - Western Michigan University (USA), T. Lasri - Université Lille Nord de France, IEMN, Groupe Mitec (France)
- Pages
- 1016 - 1018
- DOI
- 10.5162/IMCS2012/P1.4.12
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
Novel nanocomposites of polyaniline (PANI) doped by dodecylbenzenesulfonic acid with multi-walled carbon nanotubes (PANI/CNT) were synthesized for methylamine sensing. FTIR and Raman spectroscopy, XRD and TEM methods proved their composition and nanostructure. The gas sensing ability of their thin films (10-30 µm) was investigated at methylamine concentrations from 570 ppb to 10 ppm through the change of the films electrical resistance. The composites showed high performances in terms of reversibility and detection limit. Specifically, the last parameter was below 600 ppb. However, the response times increased drastically when the concentration of the methylamine decreased. At 9.5 ppm concentration the response time was around 10 minutes while it reached 25 min and 80 min at 2.5 ppm and 570 ppb respectively.