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Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension
Maghemite (γ-Fe(2)O(3)) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent. Characterization of all samples performed by several techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM)...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4052494/ https://www.ncbi.nlm.nih.gov/pubmed/24963510 http://dx.doi.org/10.1155/2014/589479 |
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author | Nurdin, Irwan Johan, Mohd Rafie Yaacob, Iskandar Idris Ang, Bee Chin |
author_facet | Nurdin, Irwan Johan, Mohd Rafie Yaacob, Iskandar Idris Ang, Bee Chin |
author_sort | Nurdin, Irwan |
collection | PubMed |
description | Maghemite (γ-Fe(2)O(3)) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent. Characterization of all samples performed by several techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM), alternating gradient magnetometry (AGM), thermogravimetric analysis (TGA), dynamic light scattering (DLS), and zeta potential. The XRD patterns confirmed that the particles were maghemite. The crystallite size of all samples decreases with the increasing concentration of nitric acid. TEM observation showed that the particles have spherical morphology with narrow particle size distribution. The particles showed superparamagnetic behavior with decreased magnetization values at the increasing concentration of nitric acid. TGA measurement showed that the stability temperature decreases with the increasing concentration of nitric acid. DLS measurement showed that the hydrodynamic particle sizes decrease with the increasing concentration of nitric acid. Zeta potential values show a decrease with the increasing concentration of nitric acid. The increasing concentration of nitric acid in synthesis of maghemite nanoparticles produced smaller size particles, lower magnetization, better thermal stability, and more stable maghemite nanoparticles suspension. |
format | Online Article Text |
id | pubmed-4052494 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-40524942014-06-24 Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension Nurdin, Irwan Johan, Mohd Rafie Yaacob, Iskandar Idris Ang, Bee Chin ScientificWorldJournal Research Article Maghemite (γ-Fe(2)O(3)) nanoparticles have been synthesized using a chemical coprecipitation method at different nitric acid concentrations as an oxidizing agent. Characterization of all samples performed by several techniques including X-ray diffraction (XRD), transmission electron microscopy (TEM), alternating gradient magnetometry (AGM), thermogravimetric analysis (TGA), dynamic light scattering (DLS), and zeta potential. The XRD patterns confirmed that the particles were maghemite. The crystallite size of all samples decreases with the increasing concentration of nitric acid. TEM observation showed that the particles have spherical morphology with narrow particle size distribution. The particles showed superparamagnetic behavior with decreased magnetization values at the increasing concentration of nitric acid. TGA measurement showed that the stability temperature decreases with the increasing concentration of nitric acid. DLS measurement showed that the hydrodynamic particle sizes decrease with the increasing concentration of nitric acid. Zeta potential values show a decrease with the increasing concentration of nitric acid. The increasing concentration of nitric acid in synthesis of maghemite nanoparticles produced smaller size particles, lower magnetization, better thermal stability, and more stable maghemite nanoparticles suspension. Hindawi Publishing Corporation 2014 2014-05-18 /pmc/articles/PMC4052494/ /pubmed/24963510 http://dx.doi.org/10.1155/2014/589479 Text en Copyright © 2014 Irwan Nurdin et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Nurdin, Irwan Johan, Mohd Rafie Yaacob, Iskandar Idris Ang, Bee Chin Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension |
title | Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension |
title_full | Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension |
title_fullStr | Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension |
title_full_unstemmed | Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension |
title_short | Effect of Nitric Acid Concentrations on Synthesis and Stability of Maghemite Nanoparticles Suspension |
title_sort | effect of nitric acid concentrations on synthesis and stability of maghemite nanoparticles suspension |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4052494/ https://www.ncbi.nlm.nih.gov/pubmed/24963510 http://dx.doi.org/10.1155/2014/589479 |
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