A facile, ultra-sensitive, quickly recoverable, and room temperature operating ammonia sensor was developed by using polyaniline (PANI) and hematite (α-Fe2O3) hybrid nanocomposite. The hematite nanoparticles were obtained by template-free hydrothermal process. The PANI/α-Fe2O3 nanocomposite was synthesized by in situ chemical oxidative polymerization process of aniline in presence of α-Fe2O3 nanoparticles. The structural and morphological study and compositional analysis of PANI/α-Fe2O3 were performed by Fourier transform infrared spectroscopy, X-ray powder diffraction analysis, and scanning electron microscopy. The PANI/α-Fe2O3 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.

Room temperature operating sensitive and reproducible ammonia sensor based on PANI/hematite nanocomposite / M.A. Bora, P.B. Adhav, B.B. Diwate, D.S. Pawar, S. Dallavalle, V.V. Chabukswar. - In: POLYMER-PLASTICS TECHNOLOGY AND MATERIALS. - ISSN 2574-0881. - (2019 Jan 17). [Epub ahead of print] [10.1080/25740881.2018.1563131]

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

S. Dallavalle
Penultimo
;
2019-01-17

Abstract

A facile, ultra-sensitive, quickly recoverable, and room temperature operating ammonia sensor was developed by using polyaniline (PANI) and hematite (α-Fe2O3) hybrid nanocomposite. The hematite nanoparticles were obtained by template-free hydrothermal process. The PANI/α-Fe2O3 nanocomposite was synthesized by in situ chemical oxidative polymerization process of aniline in presence of α-Fe2O3 nanoparticles. The structural and morphological study and compositional analysis of PANI/α-Fe2O3 were performed by Fourier transform infrared spectroscopy, X-ray powder diffraction analysis, and scanning electron microscopy. The PANI/α-Fe2O3 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.
Settore CHIM/08 - Chimica Farmaceutica
Settore CHIM/06 - Chimica Organica
17-gen-2019
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/636642
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