Influence of polymerization temperature on NH3 response of PANI/TiO2 thin film gas sensor

被引：178
作者：
Tai, Huiling [1 ]
Jiang, Yadong [1 ]
Xie, Guangzhong [1 ]
Yu, Junsheng [1 ]
Chen, Xuan [1 ]
Ying, Zhihua [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Optoelect Informat, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 129卷 / 01期
基金：
中国国家自然科学基金;
关键词：
PANI/TiO2; nanocomposite thin film; NH3; polymerization temperature; gas sensor;
D O I：
10.1016/j.snb.2007.08.013
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Polyaniline/titanium dioxide (PANI/TiO2) nanocomposite thin films were processed on a silicon substrate with gold interdigital electrodes by an in-situ self-assembly approach for NH3 gas-sensing application, and the effect of polymerization temperature on the gas response of the PANI/TiO2 thin film gas sensor was investigated. The results showed that the PANI/TiO2 thin film prepared at 10 degrees C was superior to those prepared at other temperatures in terms of response properties, which also exhibited good reproducibility, selectivity and long-term stability. UV-vis absorption and surface morphology characterization of the nanocomposite thin films were performed to explain these different gas-sensing properties. The sensing mechanism was also discussed. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：319 / 326
页数：8
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