AC conductivity and dielectric properties of nanostructured amorphous manganese dioxide and polypyrrole/manganese dioxide composite

Polypyrrole/manganese dioxide (Ppy/MnO 2 ) nanocomposite has been prepared by a simple in-situ redox reaction between pyrrole monomer and aqueous KMnO 4 solution under ambient conditions. The prepared Ppy/MnO 2 nanocomposite was characterized by powder X-ray diffraction (PXRD), Fourier transformer i...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2021-02, Vol.32 (3), p.3352-3360
Main Authors: Kulakarni, Yankappa A., Jagadeesh, M. R., Jambaladinni, Sahebagouda, Suresh Kumar, H. M., Vasanthkumar, M. S., Shivakumara, S.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Dielectric properties
Electrical resistivity
Fourier transforms
Frequency ranges
Infrared analysis
Infrared spectroscopy
Manganese dioxide
Materials Science
Nanocomposites
Nanoparticles
Optical and Electronic Materials
Polypyrroles
Potassium permanganate
Redox reactions
Spectrum analysis
X ray powder diffraction
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Summary:Polypyrrole/manganese dioxide (Ppy/MnO 2 ) nanocomposite has been prepared by a simple in-situ redox reaction between pyrrole monomer and aqueous KMnO 4 solution under ambient conditions. The prepared Ppy/MnO 2 nanocomposite was characterized by powder X-ray diffraction (PXRD), Fourier transformer infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and AC impedance spectroscopic properties have been studied. PXRD and FT-IR spectral analysis studies reveal that the MnO 2 nanoparticles are embedded in polypyrrole matrix. The electrical conductivity of polypyrrole-based nanocomposite has been reported in the frequency range of 10 Hz to 100 MHz at ambient conditions. The observed behaviour showed that the conductivity of Ppy/MnO 2 nanocomposite increased with increase of frequency.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-020-05083-y