Cargando…

Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites

A study on the influence of magnesium ferrite nanoparticles on the optical and dielectric attributes of Polyaniline has been conducted. Magnesium nano Ferrite powder is synthesized by the self-propagating solution combustion method. Polyaniline–Magnesium nano ferrite composites are synthesized by ch...

Descripción completa

Detalles Bibliográficos
Autores principales: Kolhar, Priyanka, Sannakki, Basavaraja, Verma, Meenakshi, Suresha, Siddaramappa, Alshehri, Mansoor, Shah, Nehad Ali
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10420936/
https://www.ncbi.nlm.nih.gov/pubmed/37570551
http://dx.doi.org/10.3390/nano13152234
_version_ 1785088840701050880
author Kolhar, Priyanka
Sannakki, Basavaraja
Verma, Meenakshi
Suresha, Siddaramappa
Alshehri, Mansoor
Shah, Nehad Ali
author_facet Kolhar, Priyanka
Sannakki, Basavaraja
Verma, Meenakshi
Suresha, Siddaramappa
Alshehri, Mansoor
Shah, Nehad Ali
author_sort Kolhar, Priyanka
collection PubMed
description A study on the influence of magnesium ferrite nanoparticles on the optical and dielectric attributes of Polyaniline has been conducted. Magnesium nano Ferrite powder is synthesized by the self-propagating solution combustion method. Polyaniline–Magnesium nano ferrite composites are synthesized by chemical oxidative polymerization of aniline with the addition of Magnesium nanoparticles. The samples are characterized with XRD and UV-Vis spectrometer, in the wavelength range of 200–800 nm and studied for optical properties. Dielectric properties are studied in the frequency range of 50 Hz to 5 MHz. X-ray diffraction reveals single phase formation of Magnesium ferrite, whereas Polyaniline shows an amorphous nature. In the XRD of the composites, we see the crystalline peaks of ferrite becoming more intense with the addition of ferrite and whereas the peak of Polyaniline diminishes. The crystallite size is quantified with the Debye—Scherrer formula, and it increases as the content of ferrite in the composites increases. The micro-strain decreases in the composites as the percentage of ferrite enhances in the composites. In the UV-Vis absorption spectra of composites, the peaks of Polyaniline shift to higher wavelength and there is also an absorption band in the spectra of composites corresponding to that of Magnesium ferrite particles. Both direct and indirect band gaps are calculated with the Tauc plot, and both the optical band gap decrease as the percentage of ferrite increases in the composite. The dielectric loss and dielectric constant both decrease with frequency in all the samples, and the dielectric response are in good agreement with Maxwell—Wagner model. Ferrite—polymer composites with both conducting and magnetic properties are considered useful for electromagnetic shielding and microwave absorption.
format Online
Article
Text
id pubmed-10420936
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-104209362023-08-12 Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites Kolhar, Priyanka Sannakki, Basavaraja Verma, Meenakshi Suresha, Siddaramappa Alshehri, Mansoor Shah, Nehad Ali Nanomaterials (Basel) Article A study on the influence of magnesium ferrite nanoparticles on the optical and dielectric attributes of Polyaniline has been conducted. Magnesium nano Ferrite powder is synthesized by the self-propagating solution combustion method. Polyaniline–Magnesium nano ferrite composites are synthesized by chemical oxidative polymerization of aniline with the addition of Magnesium nanoparticles. The samples are characterized with XRD and UV-Vis spectrometer, in the wavelength range of 200–800 nm and studied for optical properties. Dielectric properties are studied in the frequency range of 50 Hz to 5 MHz. X-ray diffraction reveals single phase formation of Magnesium ferrite, whereas Polyaniline shows an amorphous nature. In the XRD of the composites, we see the crystalline peaks of ferrite becoming more intense with the addition of ferrite and whereas the peak of Polyaniline diminishes. The crystallite size is quantified with the Debye—Scherrer formula, and it increases as the content of ferrite in the composites increases. The micro-strain decreases in the composites as the percentage of ferrite enhances in the composites. In the UV-Vis absorption spectra of composites, the peaks of Polyaniline shift to higher wavelength and there is also an absorption band in the spectra of composites corresponding to that of Magnesium ferrite particles. Both direct and indirect band gaps are calculated with the Tauc plot, and both the optical band gap decrease as the percentage of ferrite increases in the composite. The dielectric loss and dielectric constant both decrease with frequency in all the samples, and the dielectric response are in good agreement with Maxwell—Wagner model. Ferrite—polymer composites with both conducting and magnetic properties are considered useful for electromagnetic shielding and microwave absorption. MDPI 2023-08-02 /pmc/articles/PMC10420936/ /pubmed/37570551 http://dx.doi.org/10.3390/nano13152234 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kolhar, Priyanka
Sannakki, Basavaraja
Verma, Meenakshi
Suresha, Siddaramappa
Alshehri, Mansoor
Shah, Nehad Ali
Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites
title Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites
title_full Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites
title_fullStr Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites
title_full_unstemmed Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites
title_short Investigation of Structural, Dielectric and Optical Properties of Polyaniline—Magnesium Ferrite Composites
title_sort investigation of structural, dielectric and optical properties of polyaniline—magnesium ferrite composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10420936/
https://www.ncbi.nlm.nih.gov/pubmed/37570551
http://dx.doi.org/10.3390/nano13152234
work_keys_str_mv AT kolharpriyanka investigationofstructuraldielectricandopticalpropertiesofpolyanilinemagnesiumferritecomposites
AT sannakkibasavaraja investigationofstructuraldielectricandopticalpropertiesofpolyanilinemagnesiumferritecomposites
AT vermameenakshi investigationofstructuraldielectricandopticalpropertiesofpolyanilinemagnesiumferritecomposites
AT sureshasiddaramappa investigationofstructuraldielectricandopticalpropertiesofpolyanilinemagnesiumferritecomposites
AT alshehrimansoor investigationofstructuraldielectricandopticalpropertiesofpolyanilinemagnesiumferritecomposites
AT shahnehadali investigationofstructuraldielectricandopticalpropertiesofpolyanilinemagnesiumferritecomposites