Ultra-sensitive polyaniline-iron oxide nanocomposite room temperature flexible ammonia sensor

D. K. Bandgar; S. T. Navale; M. Naushad; R. S. Mane; F. J. Stadler; V. B. Patil

doi:10.1039/c5ra11512d

Ultra-sensitive polyaniline-iron oxide nanocomposite room temperature flexible ammonia sensor

D. K. Bandgar
, S. T. Navale
, M. Naushad
, R. S. Mane
, F. J. Stadler
, V. B. Patil^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

98 Scopus citations

Abstract

A novel flexible, ultra-sensitive, selective, and room temperature operable polyaniline/iron-oxide (PAni/α-Fe₂O₃) nanocomposite ammonia (NH₃) gas sensor was developed onto a flexible polyethylene terephthalate (PET) substrate by in situ polymerization process. The observations were recorded to 100 ppm fixed level for various gases including NO_2, CH₃OH, C₂H₅OH, NH₃, and H₂S through monitoring the change in resistance of the developed sensor. The flexible PAni/α-Fe₂O₃ nanocomposite sensor demonstrated better selectivity towards NH₃ (response = 39% and stability = 74%). The synergistic response of the flexible PAni/α-Fe₂O₃ sensor was remarkable than that of the PAni and α-Fe₂O₃ alone; indicating the effective improvement in the performance of PAni flexible sensor on nanocomposite process. Moreover, the flexible sensor detected NH₃ at low concentration (5 ppm) with a fast response (27 s) and very short recovery time (46 s). Further, PAni/α-Fe₂O₃ flexible sensor films were characterized by X-ray diffraction, field-emission scanning electron microscopy, UV-visible and Raman spectroscopy, Fourier transform infrared and X-ray photoelectron for structural analysis, morphological evolution, optical and surface related studies.

Original language	English
Pages (from-to)	68964-68971
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	84
DOIs	https://doi.org/10.1039/c5ra11512d
State	Published - 6 Aug 2015
Externally published	Yes

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Publisher Copyright:
© The Royal Society of Chemistry 2015.

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering

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@article{4bd68c7c465743b2b368555083117eb4,

title = "Ultra-sensitive polyaniline-iron oxide nanocomposite room temperature flexible ammonia sensor",

abstract = "A novel flexible, ultra-sensitive, selective, and room temperature operable polyaniline/iron-oxide (PAni/α-Fe2O3) nanocomposite ammonia (NH3) gas sensor was developed onto a flexible polyethylene terephthalate (PET) substrate by in situ polymerization process. The observations were recorded to 100 ppm fixed level for various gases including NO2, CH3OH, C2H5OH, NH3, and H2S through monitoring the change in resistance of the developed sensor. The flexible PAni/α-Fe2O3 nanocomposite sensor demonstrated better selectivity towards NH3 (response = 39\% and stability = 74\%). The synergistic response of the flexible PAni/α-Fe2O3 sensor was remarkable than that of the PAni and α-Fe2O3 alone; indicating the effective improvement in the performance of PAni flexible sensor on nanocomposite process. Moreover, the flexible sensor detected NH3 at low concentration (5 ppm) with a fast response (27 s) and very short recovery time (46 s). Further, PAni/α-Fe2O3 flexible sensor films were characterized by X-ray diffraction, field-emission scanning electron microscopy, UV-visible and Raman spectroscopy, Fourier transform infrared and X-ray photoelectron for structural analysis, morphological evolution, optical and surface related studies.",

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note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

month = aug,

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doi = "10.1039/c5ra11512d",

language = "English",

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AU - Bandgar, D. K.

AU - Navale, S. T.

AU - Naushad, M.

AU - Mane, R. S.

AU - Stadler, F. J.

AU - Patil, V. B.

PY - 2015/8/6

Y1 - 2015/8/6

N2 - A novel flexible, ultra-sensitive, selective, and room temperature operable polyaniline/iron-oxide (PAni/α-Fe2O3) nanocomposite ammonia (NH3) gas sensor was developed onto a flexible polyethylene terephthalate (PET) substrate by in situ polymerization process. The observations were recorded to 100 ppm fixed level for various gases including NO2, CH3OH, C2H5OH, NH3, and H2S through monitoring the change in resistance of the developed sensor. The flexible PAni/α-Fe2O3 nanocomposite sensor demonstrated better selectivity towards NH3 (response = 39% and stability = 74%). The synergistic response of the flexible PAni/α-Fe2O3 sensor was remarkable than that of the PAni and α-Fe2O3 alone; indicating the effective improvement in the performance of PAni flexible sensor on nanocomposite process. Moreover, the flexible sensor detected NH3 at low concentration (5 ppm) with a fast response (27 s) and very short recovery time (46 s). Further, PAni/α-Fe2O3 flexible sensor films were characterized by X-ray diffraction, field-emission scanning electron microscopy, UV-visible and Raman spectroscopy, Fourier transform infrared and X-ray photoelectron for structural analysis, morphological evolution, optical and surface related studies.

AB - A novel flexible, ultra-sensitive, selective, and room temperature operable polyaniline/iron-oxide (PAni/α-Fe2O3) nanocomposite ammonia (NH3) gas sensor was developed onto a flexible polyethylene terephthalate (PET) substrate by in situ polymerization process. The observations were recorded to 100 ppm fixed level for various gases including NO2, CH3OH, C2H5OH, NH3, and H2S through monitoring the change in resistance of the developed sensor. The flexible PAni/α-Fe2O3 nanocomposite sensor demonstrated better selectivity towards NH3 (response = 39% and stability = 74%). The synergistic response of the flexible PAni/α-Fe2O3 sensor was remarkable than that of the PAni and α-Fe2O3 alone; indicating the effective improvement in the performance of PAni flexible sensor on nanocomposite process. Moreover, the flexible sensor detected NH3 at low concentration (5 ppm) with a fast response (27 s) and very short recovery time (46 s). Further, PAni/α-Fe2O3 flexible sensor films were characterized by X-ray diffraction, field-emission scanning electron microscopy, UV-visible and Raman spectroscopy, Fourier transform infrared and X-ray photoelectron for structural analysis, morphological evolution, optical and surface related studies.

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ER -

Ultra-sensitive polyaniline-iron oxide nanocomposite room temperature flexible ammonia sensor

Abstract

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