A water dispersible graphene polymer nanocomposite was synthesized by solution blending method and deposited on a nylon-6 membrane via vacuum assisted self - Assembly (VASA) method to fabricate a flexible material applied as a chemoresistive gas sensor for trimethylamine (TMA). The morphological and structural characterization of graphene/polystyrene-sulfonate nanocomposite were carried out by using Fourier-Transform infrared (FT-IR) spectroscopy, Raman spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy and field-effect scanning electron (FE-SEM) microscope. While, electrical conductivity was measured using a four-point probe measurement. The prepared polymer nanocomposite has a percolation threshold around 0.30% vol. fraction, with a conductivity of 2.45 S/m (rsd = 3.0%, n=3). The response of the composite sensor exhibited linear range from 23 to 183 mg/L (r<sup>2</sup>=0.95713) and the sensitivity was at 1.72 × 10<sup>-3</sup> ΔR/R mg L<sup>-1</sup>. The gas sensor exhibited repeatable response to TMA gas and the calculated limit of detection was at 22.67 mg/L.

Ranola, R. A. G., Concina, I., Sevilla, F. B., Ferroni, M., Sangaletti, L. E., Sberveglieri, G., Comini, E., Room temperature trimethylamine gas sensor based on aqueous dispersed graphene, in Proceedings of the 2015 18th AISEM Annual Conference, AISEM 2015, (Fondazione Bruno Kessler, Trento, Italy, 03-05 February 2015), Institute of Electrical and Electronics Engineers Inc., New York 2015: 1-4. [10.1109/AISEM.2015.7066827] [http://hdl.handle.net/10807/98150]

Room temperature trimethylamine gas sensor based on aqueous dispersed graphene

Matteo; Sangaletti;Giorgio; Comini
Ultimo
2015

Abstract

A water dispersible graphene polymer nanocomposite was synthesized by solution blending method and deposited on a nylon-6 membrane via vacuum assisted self - Assembly (VASA) method to fabricate a flexible material applied as a chemoresistive gas sensor for trimethylamine (TMA). The morphological and structural characterization of graphene/polystyrene-sulfonate nanocomposite were carried out by using Fourier-Transform infrared (FT-IR) spectroscopy, Raman spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy and field-effect scanning electron (FE-SEM) microscope. While, electrical conductivity was measured using a four-point probe measurement. The prepared polymer nanocomposite has a percolation threshold around 0.30% vol. fraction, with a conductivity of 2.45 S/m (rsd = 3.0%, n=3). The response of the composite sensor exhibited linear range from 23 to 183 mg/L (r2=0.95713) and the sensitivity was at 1.72 × 10-3 ΔR/R mg L-1. The gas sensor exhibited repeatable response to TMA gas and the calculated limit of detection was at 22.67 mg/L.
Inglese
Proceedings of the 2015 18th AISEM Annual Conference, AISEM 2015
18th Conference on Sensors and Microsystems, AISEM 2015
Fondazione Bruno Kessler, Trento, Italy
3-feb-2015
5-feb-2015
9781479985913
Institute of Electrical and Electronics Engineers Inc.
Ranola, R. A. G., Concina, I., Sevilla, F. B., Ferroni, M., Sangaletti, L. E., Sberveglieri, G., Comini, E., Room temperature trimethylamine gas sensor based on aqueous dispersed graphene, in Proceedings of the 2015 18th AISEM Annual Conference, AISEM 2015, (Fondazione Bruno Kessler, Trento, Italy, 03-05 February 2015), Institute of Electrical and Electronics Engineers Inc., New York 2015: 1-4. [10.1109/AISEM.2015.7066827] [http://hdl.handle.net/10807/98150]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/98150
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