Ammonia gas sensor based on electrosynthesized polypyrrole films

被引：141

作者：

Carquigny, Stephanie ^{[1
,2
]}

Sanchez, Jean-Baptiste ^{[2
]}

Berger, Franck ^{[2
]}

Lakard, Boris ^{[1
]}

Lallemand, Fabrice ^{[1
]}

机构：

[1] Univ Franche Comte, CNRS, Inst UTINAM, UMR 6213, F-25030 Besancon, France

[2] Univ Franche Comte, LCPR AC, UMR CEA E4, F-25030 Besancon, France

来源：

TALANTA | 2009年 / 78卷 / 01期

关键词：

Gas sensor; Ammonia; Polypyrrole; Electrochemistry; POLYANILINE THIN-FILMS; CONDUCTING POLYMERS; CONJUGATED POLYMERS; SENSING BEHAVIORS; NH3; GAS; FABRICATION; POLY(PYRROLE); TRANSISTORS; SENSITIVITY; PERFORMANCE;

D O I：

10.1016/j.talanta.2008.10.056

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work, design and fabrication of micro-gas-sensors, polymerization and deposition of poly(pyrrole) thin films as sensitive layer for the micro-gas-sensors by electrochemical processing, and characterization of the polymer films by FTIR, X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), are reported. The change in conductance of thin polymer layers is used as a sensor signal. The behaviours, including sensitivity, reproducibility and reversibility, to various ammonia gas concentrations ranging from 8 ppm to 1000 ppm are investigated. The influence of the temperature on the electrical response of the sensors is also studied. The experimental results show that these ammonia gas sensors are efficient since they are sensitive to ammonia, reversible and reproducible at room temperature. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：199 / 206

页数：8

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