Room temperature operating sensitive and reproducible ammonia sensor based on PANI/hematite nanocomposite

A facile, ultra-sensitive, quickly recoverable, and room temperature operating ammonia sensor was developed by using polyaniline (PANI) and hematite (α-Fe 2 O 3 ) hybrid nanocomposite. The hematite nanoparticles were obtained by template-free hydrothermal process. The PANI/α-Fe 2 O 3 nanocomposite w...

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Bibliographic Details
Published in:Polymer-plastics technology and engineering 2019-09, Vol.58 (14), p.1545-1555
Main Authors: Bora, Manisha Atul, Adhav, Pravin Bhikaji, Diwate, Balasaheb Bajirao, Pawar, Digamber Shripati, Dallavalle, Sabrina, Chabukswar, Vasant Vidyadhar
Format: Article
Language:English
Subjects:
Ammonia
ammonia sensor
Aniline
Chemical synthesis
Conducting polymer
Ferric oxide
Fourier transforms
Hematite
Infrared analysis
nanocomposite
Nanocomposites
Nanoparticles
PANI
Polyanilines
Reproducibility
Room temperature
X ray powder diffraction
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Summary:A facile, ultra-sensitive, quickly recoverable, and room temperature operating ammonia sensor was developed by using polyaniline (PANI) and hematite (α-Fe 2 O 3 ) hybrid nanocomposite. The hematite nanoparticles were obtained by template-free hydrothermal process. The PANI/α-Fe 2 O 3 nanocomposite was synthesized by in situ chemical oxidative polymerization process of aniline in presence of α-Fe 2 O 3 nanoparticles. The structural and morphological study and compositional analysis of PANI/α-Fe 2 O 3 were performed by Fourier transform infrared spectroscopy, X-ray powder diffraction analysis, and scanning electron microscopy. The PANI/α-Fe 2 O 3 sensor showed excellent reproducibility, ultra-fast response, and excellent sensitivity (46.72%) as compared to PANI (29.72%) sensor towards ammonia gas at room temperature.
ISSN:2574-0881
0360-2559
2574-089X
1525-6111
DOI:10.1080/25740881.2018.1563131