Dielectric properties of PANI with metal oxide nanocomposites

Ambalagi, Sharanabasamma M.; Devendrappa, Mahalesh; Nagaraja, S.; Sannakki, Basavaraja

doi:10.1063/1.5047678

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…where, D is the average crystallite size of the powdered particles, λ = 1.54 Å is the wavelength of CuKα, β is full width at half maximum (FWHM) of intensity of major peak, θ is the angular position of the peak (Bragg angle). [22] The crystallite size of the CuO nanoparticle and pure PANI are found to be equal to 50.13 nm and 62 nm, respectively. The average crystallite size of the nanocomposites of PANI/CuO is found to be 24.19 nm.…”

Section: X-ray Diffraction (Xrd) Studiesmentioning

confidence: 94%

High Performance Conducting Nanocomposites Polyaniline (PANI)-CuO with Enhanced Antimicrobial Activity for Biomedical Applications

Vyas¹,

Shukla²,

Shivhare³

et al. 2021

ES Mater. Manuf.

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The purpose of this research is to develop advance conducting material blended with metal oxides that held both conducting and antimicrobial properties and due to this, applicable in many biomedical fields. The synthesis of nanoparticles of copper oxide (CuO) is performed by the chemical co-precipitation method and the synthesis of pure polyaniline (PANI) and PANI-CuO nanocomposites were performed by using in-situ chemical oxidative synthesis. The structural analysis was carried out by Xray diffraction (XRD) studies, Fourier transform infrared spectroscopy (FTIR), and Ultraviolet -Visible (UV-Vis) absorption spectrometry. The peaks obtained in spectra validate the fabrication of desired materials. The average particle size of synthesized materials was calculated using the Debye Scherrer formula, which was found in the nanoscale range. The scanning electron microscope (SEM) images explored the morphology of CuO and PANI-CuO composite. The direct current (DC) conductivity measurement of samples was performed by the four-probe method for various temperatures. The values showed an increase of electrical conductivity in the composite as compared to PANI and supported the metallic nature of the composite. The antibacterial activity of composites was performed by disk diffusion method using Bacillus subtilis (Gram + ve bacteria) and Escherichia coli (Gram-ve bacteria) and the results are encouraging.

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Section: X-ray Diffraction (Xrd) Studiesmentioning

confidence: 94%

High Performance Conducting Nanocomposites Polyaniline (PANI)-CuO with Enhanced Antimicrobial Activity for Biomedical Applications

Vyas¹,

Shukla²,

Shivhare³

et al. 2021

ES Mater. Manuf.

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“…Where Cp-capacitance under investigation measured in parallel mode, S-electrode cross-sectional area. The dielectric loss (ε") is given using the relation [39].…”

Section: Dielectric Property Studiesmentioning

confidence: 99%

Influence of Y3+ Doping on Dielectric and Optical Properties of Ce2S3 Spherical Shaped Nanostructures Synthesized by Chemical Precipitation Method

Adimule¹,

Yallur²,

Sankannavar³

2023

NHC

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In the present investigation, Y3+ doped (5 wt. %, 10 wt. %, and 12 wt. %) cerium sesquisulfides (Ce2S3) nanoparticles (NPS) were synthesized by a simple chemical precipitation method. Thin films of Y3+:Ce2S3 NPs achieved on ITO (indium tin oxide) substrate. XRD (X-ray diffraction) patterns were used to estimate the size of the NPS, morphology index, texture coefficient, and lattice constants. The crystallite size was found to be in the range of 18-34 nm. UV-visible spectral studies were carried out in order to understand optical absorptivity, and optical band (Eg) of the as-synthesized nanostructures (NS). It has been observed that the red shift in the optical absorptivity and Eg value varies between 3.45 eV to 2.59 eV. Morphology and the presence of Y+3 were investigated by scanning electron microscope (SEM) and energy dispersive X-ray studies (EDX). However, agglomerated spherical-shaped NPs and homogeneous dispersion of Y3+ were observed in EDX analysis. Chemical constituents and nature of the doped NS were examined by X-ray photoelectron spectroscopy (XPS), and binding energies matched with Y 3d3/2, Y 3d5/2, Ce 3d3/2, Ce 3d5/2, O1s, C1s peaks. Y3+: Ce2S3 (12 wt. %) NS subjected for dielectric property studies in the frequency range of 10 Hz-10 MHz at room temperature (RT). High dielectric permittivity (Ɛ), and very low dielectric loss (tan δ) were observed at low frequency for 12 wt. % Y3+:Ce2S3 NS as compared with other doped NS. The as-synthesized NS can be used for high dielectric permittivity, low dielectric loss, and capacitor-related applications.

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A review on metal oxide-doped polyaniline nanocomposites

Abirami,

Kumar

2024

J Mater Sci

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Dielectric properties of PANI with metal oxide nanocomposites

Cited by 7 publications

References 9 publications

High Performance Conducting Nanocomposites Polyaniline (PANI)-CuO with Enhanced Antimicrobial Activity for Biomedical Applications

High Performance Conducting Nanocomposites Polyaniline (PANI)-CuO with Enhanced Antimicrobial Activity for Biomedical Applications

Influence of Y<sup>3+</sup> Doping on Dielectric and Optical Properties of Ce<sub>2</sub>S<sub>3</sub> Spherical Shaped Nanostructures Synthesized by Chemical Precipitation Method

A review on metal oxide-doped polyaniline nanocomposites

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