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

被引：179

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

页码：319 / 326

页数：8

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