Room temperature trimethylamine gas sensor based on aqueous dispersed graphene

被引：0

作者：

Raola, Rey Alfred G. ^{[1
,2
]}

Concina, Isabella ^{[2
]}

Sevilla, Fortunato B. ^{[1
,3
]}

Ferroni, Matteo ^{[2
]}

Sangaletti, Luigi ^{[4
]}

Sberveglieri, Giorgio ^{[2
]}

Comini, Elisabetta ^{[2
]}

机构：

[1] Univ Santo Tomas, Grad Sch, Manila, Philippines

[2] Univ Brescia, Dept Informat Engn, CNR, INO SENSOR, I-25133 Brescia, Italy

[3] Univ Santo Tomas, Res Ctr Nat & Appl Sci, Manila, Philippines

[4] Univ Cattolica Sacro Cuore, Dept Math & Phys, Brescia, Italy

来源：

2015 18TH AISEM ANNUAL CONFERENCE | 2015年

关键词：

graphene; polymer nanocomposites; trimethylamine & chemiresistor; EXFOLIATED GRAPHITE OXIDE; REDUCTION;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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(2)=0.95713) and the sensitivity was at 1.72 x 10(-3) Delta R/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.

引用

页数：4

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