Ammonia sensing characteristics of thin film based on polyelectrolyte templated polyaniline

被引：80
|
作者：
Prasad, GK
Radhakrishnan, TP [1 ]
Kumar, DS
Krishna, MG
机构：
[1] Univ Hyderabad, Sch Chem, Hyderabad 500046, Andhra Pradesh, India
[2] Univ Hyderabad, Sch Phys, Hyderabad 500046, Andhra Pradesh, India
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2005年 / 106卷 / 02期
关键词：
polyaniline; poly(4-styrenesulfonate-co-maleic acid); spin-cast film; ammonia sensor;
D O I：
10.1016/j.snb.2004.09.011
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel conductive polyaniline is synthesized using poly(4-styrenesulfonate-co-maleic acid) as counter ion and template. The resistance of this electroactive polymer increases in the presence of gases such as ammonia. This transducing property is exploited and spin-cast film of this material on glass substrate is established as ammonia gas sensor module, for gas concentrations in the range 5-250 ppm. In this range, the response and recovery times are typically 50-1000 s. The resistance response (R/R-0) at short time scales of about 150 s, is shown to vary linearly with the ammonia concentration. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：626 / 631
页数：6
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