Room Temperature Ammonia Gas Sensor Based on Polyaniline-TiO2 Nanocomposite

被引：87
|
作者：
Pawar, S. G. [1 ]
Chougule, M. A. [1 ]
Patil, S. L. [1 ]
Raut, B. T. [1 ]
Godse, P. R. [1 ]
Sen, Shashwati [2 ]
Patil, V. B. [1 ]
机构：
[1] Solapur Univ, Mat Res Lab, Sch Phys Sci, Solapur 413255, MS, India
[2] Bhabha Atom Res Ctr, Crystal Technol Sect, Bombay 400085, Maharashtra, India
来源：
IEEE SENSORS JOURNAL | 2011年 / 11卷 / 12期
关键词：
Ammonia sensor; spin coating technique; PANi-TiO2; nanocomposite; X-ray diffraction (XRD); scanning electron microscopy (SEM); Fourier transform infrared (FTIR); THIN-FILM;
D O I：
10.1109/JSEN.2011.2160392
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In the present work, we report on the performance of room temperature ammonia gas sensor based on polyaniline-titanium dioxide (PANi-TiO2) nanocomposite. The nanocomposite was fabricated using the spin coating method on glass substrates. PANi-TiO2 (0%-50%) nanocomposite films were characterized for their structural as well as surface morphologies, UV-Vis and various gas responses were studied. The XRD analysis showed formation of nanocrystalline TiO2, while polyaniline exhibited amorphous nature. Morphological analysis using scanning electron microscopy of PANi-TiO2 nanocomposite film revealed uniform distribution of TiO2 nanoparticles in PANi matrix. The absorption peaks in FTIR and UV-Vis spectra of PANi-TiO2 composite film were found to shift to a higher wave number as compared to those observed in pure PANi. The observed shifts were attributed to the interaction between the TiO2 particle and PANi molecular chains. The gas sensing properties showed the sensor exhibit selectivity to ammonia (NH3) at room temperature.
引用
收藏
页码：3417 / 3423
页数：7
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