Thin polyaniline and polyaniline/carbon nanocomposite films for gas sensing

被引：49

作者：

Lobotka, P. ^{[1
]}

Kunzo, P. ^{[1
]}

Kovacova, E. ^{[1
]}

Vavra, I. ^{[1
]}

Krizanova, Z. ^{[1
]}

Smatko, V. ^{[1
]}

Stejskal, J. ^{[2
]}

Konyushenko, E. N. ^{[2
]}

Omastova, M. ^{[3
]}

Spitalsky, Z. ^{[3
]}

Micusik, M. ^{[3
]}

Krupa, I. ^{[3
]}

机构：

[1] Inst Elect Engn SAS, SK-84104 Bratislava, Slovakia

[2] Inst Macromol Chem ASCR, CZ-16206 Prague 6, Czech Republic

[3] Polymer Inst SAS, SK-84236 Bratislava, Slovakia

来源：

THIN SOLID FILMS | 2011年 / 519卷 / 12期

关键词：

Gas sensor; Polyaniline thin film; Nanocomposite; Carbon nanotube; IUPAC TECHNICAL REPORT; SENSORS;

D O I：

10.1016/j.tsf.2011.01.177

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the gas sensing properties of five polyaniline-based materials thick and thin PANI films, nanocomposite PANI/MWNT and PANI/SWNT films, and PANI nanogranules embedded in a polyvinylpyrrolidone matrix. The films (except for the latter) were deposited within the induction period of the polymerization process on gold interdigitated micro electrodes. Their sensitivity to NH3, H-2, ethanol, methanol, and acetone was measured. The thin PANI film (similar to 100 nm thick) prepared by a lift-off process had the sensitivity to ammonia below 0.5 ppm, which was higher than that of nanocomposite films. Two materials-thick PANI film and nanocomposite PANI/MWNT film exhibited a shallow minimum in the temperature dependence of resistance (at 313 K and 319 K), which is a feature exploitable in practical applications, since the gas sensors should be insensitive to small temperature fluctuations at these temperatures. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：4123 / 4127

页数：5

共 12 条

[1] Gas sensors based on conducting polymers [J].