Investigations on structural, optical, and AC conductivity of Polyaniline/Manganese Dioxide nanocomposites

International Journal of Nano Dimension

مقاله 10، دوره 10، شماره 4، دی 2019، صفحه 410-416   

نوع مقاله: Reasearch Paper

نویسندگان

Subbiah Chelladurai Vella Durai^{* 1}؛ Esakkimuthu Kumar²؛ Durairaj Muthuraj³؛ Vethamanickam Bena Jothy⁴

¹Department of Physics, JP College of Arts and Science, Agarakattu, Tenkasi - 627852, Tamil Nadu, India.

²School of Science, Tamil Nadu Open University, Chennai-600015. Tamil Nadu, India.

³PG and Research Department of Physics, The M.D.T Hindu College, Tirunelveli -627010. Tamil Nadu, India.

⁴Department of Physics & Research Center, Women’s Christian College, Nagarcoil -62900l. Tamil Nadu, India.

چکیده

A Polyaniline/Manganese dioxide (PANI/MnO₂) nanocomposite contains five weight percentages of MnO_2. It has been successfully prepared by in situ polymerization. The structural, optical, and conductivity of nanocomposites remain relative to changes with respect to the weight percentage of MnO₂. The structural, morphological, optical, and electrical conductivity investigation of pure MnO₂, pure PANI, and nanocomposites were done with powder XRD, HRTEM, SEM, FT-IR, UV and Impedance spectra. XRD results of the PANI/MnO₂ nanocomposites say that the crystalline structure is converted into a very less crystalline structure due to the incorporation of MnO₂ which is inside PANI chain. The HRTEM and SEM images are confirmed to the nanocomposite formation, morphology studies and also supported to the XRD results. From the optical spectra, MnO₂ nanoparticles have been impressed in the surface of PANI. It works as the compensator in the formation of nanocomposites. UV spectral analysis reveals that the absorption of MnO₂ modifies the absorption wavelength of under visible light in whole range. The absorption wavelength of nanocomposites is 288 nm and 337 nm. AC electrical conductivity of the prepared nanocomposites from impedance spectroscopy was carried out and compared with pure materials. The AC conductivity of as-prepared nanocomposites has been analyzed in the range of 298 K to 423 K. The AC conductivity of nanocomposites varies depending upon a change of logarithmic frequency.

کلیدواژه‌ها

Conductivity؛ nanoparticles؛ Polyaniline؛ Polymerization؛ Surface

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