The investigation of reduced graphene oxideSnO sub(2)-polyaniline composite thin films for ammonia detection at room temperature

The reduced graphene oxideSnO sub(2) (GS)-polyaniline (PANI) composite was synthesized through the in situ chemical oxide polymerization for ammonia (NH sub(3)) gas detection at room temperature. The structure and morphology of resultant GS-PANI composite were characterized by ultraviolet-visible sp...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2015-02, Vol.26 (2), p.833-841
Main Authors: Ye, Zongbiao, Jiang, Yadong, Tai, Huiling, Guo, Ningjie, Xie, Guangzhong, Yuan, Zhen
Format: Article
Language:English
Subjects:
Ammonia
Field emission
Graphene
Linearity
Oxides
Polymerization
Scanning electron microscopy
Sensors
Thin films
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Summary:The reduced graphene oxideSnO sub(2) (GS)-polyaniline (PANI) composite was synthesized through the in situ chemical oxide polymerization for ammonia (NH sub(3)) gas detection at room temperature. The structure and morphology of resultant GS-PANI composite were characterized by ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy and field emission scanning electron microscopy, respectively. The NH sub(3) sensing performance of the composite was investigated and compared with that of the sensors based on bare PANI and GS. The results revealed that the GS-PANI composite film exhibited 160 % response (1.4 and 16 times response enhanced) to 20 ppm NH sub(3) than that of bare PANI and GS based devices. Meanwhile, the GS-PANI based sensors displayed linearity in response and homogeneous repeatability on exposure to NH sub(3) at room temperature.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-014-2472-3